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This is the current pass at the dates. If more evidence comes to light, it will be added, and when Avengers 4 is released, and any other future releases containing T'Challa and/or Nakia, things will also be tweaked to reflect Chadwick Boseman's age at the time of shooting each film, working back from when each is set.

Also, a deleted scene revealed that the scene with young T'Chaka and T'Challa shown when T'Challa enters the Ancestral Plane is, in fact, later in the same day after T'Chaka kills N'Jobu, and also features a young Nakia.

First Pass

The events to be dated are:

  • T'Chaka's Date of Birth
  • Zuri's Date of Birth
  • T'Challa's Date of Birth
  • Nakia's Date of Birth
  • Killmonger's Date of Birth
  • T'Chaka and T'Challa Scene
  • Attack on Wakanda
  • 1992 Scenes

Evidence

T'Chaka's Date of Birth

List of Evidence

JOHN KANI

  • John Kani plays T'Chaka in Captain America: Civil War in two scenes, one on June 19, 2016 and one on June 22, 2016, so the middle is set on June 20.5, 2016, and the middle of filming for which was June 24.5, 2015. Kani was born on August 30, 1943, making him approximately 26,231.5 days old at the middle of filming. Working back, this would place T'Chaka's date of birth around August 26, 1944.
  • Kani plays T'Chaka again in Black Panther as a spirit, so preserved as he was when he died on June 22, 2016, and the middle of filming for which was March 6, 2017. Kani would have therefore been approximately 26,852 days old at the middle of filming. Working back, this would place T'Challa's date of birth around December 16, 1942.
    • Where does this place it, ideally?: Working back, ([August 26, 1944] × (1 ÷ (26,231.5 ÷ 365.25)) + [December 16, 1942] × (1 ÷ (26,852 ÷ 365.25))) ÷ ((1 ÷ (26,231.5 ÷ 365.25)) + (1 ÷ (26,852 ÷ 365.25))) = October 25.11779, 1943.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Earliest interpretation: N/A.
      • Latest interpretation: N/A.
        • October 25.11779, 1943, weight 4 ÷ (2 ÷ [(1 ÷ (26,231.5 ÷ 365.25)) + (1 ÷ (26,852 ÷ 365.25))]) = 0.05505.

Overall Result

October 25.11779, 1943. Weight 0.05505.

Zuri's Date of Birth

FOREST WHITAKER

  • Forest Whitaker plays Zuri in Black Panther, the middle of which is set on July 3, 2016, and the middle of filming for which was March 6, 2017. Whitaker was born on July 15, 1961, making him approximately 20,323 days old at the middle of filming. Working back, this would place Zuri's date of birth around November 11, 1960.
    • Where does this place it, ideally?: November 11, 1960.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Earliest interpretation: N/A.
      • Latest interpretation: N/A.
        • November 11, 1960, weight 4 ÷ (20,323 ÷ 365.25) = 0.07189.

Overall Result

November 11, 1960. Weight 0.07189.

T'Challa's Date of Birth

CHADWICK BOSEMAN

  • Chadwick Boseman plays T'Challa in Captain America: Civil War, the middle of which is set on June 23, 2016, and the middle of filming for which was June 24.5, 2015. Boseman was born on November 29, 1976, making him approximately 14,086.5 days old at the middle of filming. Working back, this would place T'Challa's date of birth around November 28.5, 1977.
  • Boseman plays T'Challa again in Black Panther, the middle of which is set on July 3, 2016, and the middle of filming for which was March 6, 2017. Boseman would have therefore been approximately 14,707 days old at the middle of filming. Working back, this would place T'Challa's date of birth around March 28, 1976.
  • Boseman plays T'Challa again in Avengers: Infinity War, the middle of which is set on January 11, 2018, and the middle of filming for which was April 19, 2017. Boseman would have therefore been approximately 14,751 days old at the middle of filming. Working back, this would place T'Challa's date of birth around August 23, 1977.
    • Where does this place it, ideally?: Working back, ([November 28.5, 1977] × (1 ÷ (14,086.5 ÷ 365.25)) + [March 28, 1976] × (1 ÷ (14,707 ÷ 365.25)) + [August 23, 1977] × (1 ÷ (14,751 ÷ 365.25))) ÷ ((1 ÷ (14,086.5 ÷ 365.25)) + (1 ÷ (14,707 ÷ 365.25)) + (1 ÷ (14,751 ÷ 365.25))) = April 9.78257, 1977.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Earliest interpretation: N/A.
      • Latest interpretation: N/A.
        • October 25.11779, 1943, weight 4 ÷ (3 ÷ [(1 ÷ (14,086.5 ÷ 365.25)) + (1 ÷ (14,707 ÷ 365.25)) + (1 ÷ (14,751 ÷ 365.25))]) = 0.10070.

Overall Result

April 9.78257, 1977. Weight 0.10070.

Nakia's Date of Birth

LUPITA NYONG'O

  • Lupita Nyong'o plays Nakia in Black Panther, the middle of which is set on July 3, 2016, and the middle of filming for which was March 6, 2017. Nyong'o was born on March 1, 1983, making her approximately 12,424 days old at the middle of filming. Working back, this would place Nakia's date of birth around June 28, 1982.
    • Where does this place it, ideally?: June 28, 1982.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Earliest interpretation: N/A.
      • Latest interpretation: N/A.
        • June 28, 1982, weight 4 ÷ (12,424 ÷ 365.25) = 0.11759.

Overall Result

June 28, 1982. Weight 0.11759.

Killmonger's Date of Birth

MICHAEL B. JORDAN

  • Michael B. Jordan plays Killmonger in Black Panther, the middle of which is set on July 3, 2016, and the middle of filming for which was March 6, 2017. Jordan was born on February 9, 1987, making him approximately 10,983 days old at the middle of filming. Working back, this would place Killmonger's date of birth around June 8, 1986.
    • Where does this place it ideally?: June 8, 1986.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Earliest interpretation: N/A.
      • Latest interpretation: N/A.
        • June 8, 1986, weight 4 ÷ (10,983 ÷ 365.25) = 0.13302.

Overall Result

June 8, 1986. Weight 0.13302.

Attack on Wakanda

ALMOST 30 YEARS

  • On July 1, 2016, T'Challa refers to the attack on Wakanda as "almost 30 years" ago.
    • Where does this place it, ideally?: "Almost 30 years" can be approximated as whichever is earlier, 27.5 years or the beginning of the 27th calendar year before. In this case, both give January 1, 1989.
    • How important/reliable is this piece of evidence?: Non-contradictory dialogue. Value: 3000.
      • Absolute earliest interpretation: Turns 30 years ago tomorrow, July 2, 1986.
      • Earliest possible interpretation: Turns 30 years ago next month, August 1, 1986.
      • Earliest realistic interpretation: Turns 30 years ago next calendar year, January 1, 1987.
      • Latest realistic interpretation: 26 calendar years ago (enough to get past calling it "25 years ago"), December 31, 1990. However, latest possible from other evidence is December 31, 1989.
      • Latest possible interpretation: 25.0 years ago, the very shortest that is closer to 30 than 20 years ago, July 1, 1991. However, absolute latest from other evidence is June 22, 1991.
      • Absolute latest interpretation: 24 calendar years ago, if it's any later there's no way you are referring to it as 30 years ago, December 31, 1992.
        • (([July 2, 1986] × 1 + [August 1, 1986] × 2 + [January 1, 1987] × 4) ÷ 7) to (([December 31, 1989] × 4 + [June 22, 1991] × 2 + [December 31, 1992] × 1) ÷ 7) = October 23.14286, 1986 to November 6.28571, 1990 = 1475.14285 days of leniency. January 1, 1989, weight 3000 ÷ 1475.14285 = 2.03370.

FOR 30 YEARS

  • W'Kabi says, "For 30 years your father was in power and did nothing." This implies that T'Chaka died around 30 years after the Attack on Wakanda.
    • Where does this place it, ideally?: T'Chaka died on June 22, 2016. 30 years before that is ([June 22, 2016 - 30 years] × 2 + [middle of (2016 - 30 years)] × 1) ÷ 3 = ([June 22, 1986] × 2 + [July 2, 1986] × 1) ÷ 3 = June 25.33333, 1986. However, earliest realistic as shown below is August 1, 1986.
    • How important/reliable is this piece of evidence?: Non-contradictory dialogue. Value: 3000.
      • Absolute earliest interpretation: 3 decades ago, January 1, 1980.
      • Earliest possible interpretation: Just under 35.0 years, so 30 years to the nearest decade, June 23, 1981. However, absolute earliest possible from other evidence is July 2, 1986.
      • Earliest realistic interpretation: Just under 32½ years, so 30 years to the nearest 5 years, December 23, 1983. However, earliest possible from other evidence is August 1, 1986.
      • Latest realistic interpretation: 27½ years, so 30 years to the nearest 5 years, December 22, 1988.
      • Latest possible interpretation: 3 decades ago, December 31, 1989.
      • Absolute latest interpretation: 25.0 years, so 30 years to the nearest decade, June 22, 1991.
        • (([January 1, 1980] × 1 + [July 2, 1986] × 2 + [August 1, 1986] × 4) ÷ 7) to (([December 22, 1988] × 4 + [December 31, 1989] × 2 + [June 22, 1991] × 1) ÷ 7) = August 14, 1985 to August 16.142857, 1989 = 1463.14286 days of leniency. August 1, 1986, weight 3000 ÷ 1463.14286 = 2.05038.

FOR 30 YEARS

  • In a deleted scene, W'Kabi says on July 4, 2016 that with Klaue, for "30 years, there's been no justice". This implies that the Attack on Wakanda was 30 years ago.
    • Where does this place it, ideally?: 30 years before July 4, 2016 is ([July 4, 2016 - 30 years] × 2 + [middle of (2016 - 30 years)] × 1) ÷ 3 = ([July 4, 1986] × 2 + [July 2, 1986] × 1) ÷ 3 = July 3.33333, 1986. However, earliest realistic as shown below is August 1, 1986.
    • How important/reliable is this piece of evidence?: Non-contradictory deleted scene dialogue. Value: 1500.
      • Absolute earliest interpretation: 3 decades ago, January 1, 1980.
      • Earliest possible interpretation: Just under 35.0 years, so 30 years to the nearest decade, July 5, 1981. However, absolute earliest from other evidence is July 2, 1986.
      • Earliest realistic interpretation: Just under 32½ years, so 30 years to the nearest 5 years, January 5, 1984. However, earliest possible from other evidence is August 1, 1986.
      • Latest realistic interpretation: 27½ years, so 30 years to the nearest 5 years, January 4, 1989.
      • Latest possible interpretation: 3 decades ago, December 31, 1989.
      • Absolute latest interpretation: 25.0 years, so 30 years to the nearest decade, July 4, 1991.
        • (([January 1, 1980] × 1 + [July 2, 1986] × 2 + [August 1, 1986] × 4) ÷ 7) to (([January 4, 1989] × 4 + [December 31, 1989] × 2 + [July 4, 1991] × 1) ÷ 7) = August 14, 1985 to August 25.28571, 1989 = 1472.28571 days of leniency. August 1, 1986, weight 1500 ÷ 1472.28571 = 1.01882.

Overall Result

([January 1, 1989] × 2.03370 + [August 1, 1986] × 2.05038 + [August 1, 1986] × 1.01882) ÷ (2.03370 + 2.05038 + 1.01882) = July 19.30767, 1987. Weight 2.03370 + 2.05038 + 1.01882 = 5.10290.

1992 Scenes

1992

  • The film shows the scene as "1992".
    • Where does this place it, ideally?: The middle of 1992 was = July 1.5, 1992.
    • How important/reliable is this piece of evidence?: Shown on-screen. Value: 7500.
      • Earliest interpretation: January 1, 1992.
      • Latest interpretation: December 31, 1992.
        • July 1.5, 1992, weight 7500 ÷ 365 days inclusive of leniency = 20.54795.

Overall Result

July 1.5, 1992. Weight 20.54795.

T'Chaka's Date of Birth → 1992 Scenes

ATANDWA KANI

  • Atandwa Kani was born on June 6, 1984, making him approximately 11,961 days old at the middle of filming on March 6, 2017.
    • How long does this suggest between the two events, ideally?: 11,961 days.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Shortest interpretation: N/A.
      • Longest interpretation: N/A.
        • 11,961 days, weight 4 ÷ (11,961 ÷ 365.25) = 0.12215.

Overall Result

11,961 days. Weight 0.12215.

Zuri's Date of Birth → 1992 Scenes

DENZEL WHITAKER

  • Denzel Whitaker was born on June 15, 1990, making him approximately 9761 days old at the middle of filming on March 6, 2017.
    • How long does this suggest between the two events, ideally?: 9761 days.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Shortest interpretation: N/A.
      • Longest interpretation: N/A.
        • 9761 days, weight 4 ÷ (9761 ÷ 365.25) = 0.14968.

Overall Result

9761 days. Weight 0.14968.

T'Challa's Date of Birth → 1992 Scenes

ASHTON TYLER

  • Ashton Tyler was born on August 25, 2006, making him approximately 3846 days old at the middle of filming on March 6, 2017.
    • How long does this suggest between the two events, ideally?: 3846 days.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Shortest interpretation: N/A.
      • Longest interpretation: N/A.
        • 3846 days, weight 4 ÷ (3846 ÷ 365.25) = 0.37988.

Overall Result

3846 days. Weight 0.37988.

Nakia's Date of Birth → 1992 Scenes

LIDYA JEWETT

  • Lidya Jewett was born on January 19, 2006, making her approximately 4064 days old at the middle of filming on March 6, 2017. The deleted scene revealed that her scene is set later in the day after T'Chaka kills N'Jobu.
    • How long does this suggest between the two events, ideally?: 4064 days.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Shortest interpretation: N/A.
      • Longest interpretation: N/A.
        • 4064 days, weight 4 ÷ (4064 ÷ 365.25) = 0.35950.

Overall Result

4064 days. Weight 0.35950.

Killmonger's Date of Birth → 1992 Scenes

SETH CARR

  • Seth Carr was born on August 16, 2007, making him approximately 3490 days old at the middle of filming on March 6, 2017.
    • How long does this suggest between the two events, ideally?: 3490 days.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Shortest interpretation: N/A.
      • Longest interpretation: N/A.
        • 3490 days, weight 4 ÷ (3490 ÷ 365.25) = 0.41862.

Overall Result

3490 days. Weight 0.41862.

Attack on Wakanda → 1992 Scenes

SEEMINGLY RECENT

  • When T'Chaka confronts N'Jobu, it is implied that the Attack on Wakanda was recent.
    • How long does this suggest between the two events, ideally?: About a week, 7 days.
    • How important/reliable is this piece of evidence?: Indirect dialogue. Value: 1500.
      • Absolute shortest interpretation: The same day, 0 days.
      • Shortest possible interpretation: At least 1 day.
      • Shortest realistic interpretation: A little time to plan and work out it's N'Jobu and travel, 2 days.
      • Longest realistic interpretation: About 2 months, 60.875 days.
      • Longest possible interpretation: It seemingly has to have been pretty recent, maximum 1.5 years, 547.875 days.
      • Absolute longest interpretation: It cannot possibly have been more than 5 years ago, 1826.25 days.
        • (([0 days] × 1 + [1 day] × 2 + [2 days] × 4) ÷ 7) to (([60.875 days] × 4 + [547.875 days] × 2 + [1826.25 days] × 1) ÷ 7) = 1.42857 days to 452.21429 days = 450.78572 days of leniency. 7 days, weight 1500 ÷ 450.78572 = 3.32752.

Overall Result

7 days. Weight 3.32752.

Maths

Collected Evidence

  • T'Chaka's Date of Birth
    • October 25.11779, 1943. Weight 0.05505.
  • Zuri's Date of Birth
    • November 11, 1960. Weight 0.07189.
  • T'Challa's Date of Birth
    • April 9.78257, 1977. Weight 0.10070.
  • Nakia's Date of Birth
    • June 28, 1982. Weight 0.11759.
  • Killmonger's Date of Birth
    • June 8, 1986. Weight 0.13302.
  • Attack on Wakanda
    • July 19.30767, 1987. Weight 5.10290.
  • 1992 Scenes
    • July 1.5, 1992. Weight 20.54795.
  • T'Chaka's Date of Birth → 1992 Scenes
    • 11,961 days. Weight 0.12215.
  • Zuri's Date of Birth → 1992 Scenes
    • 9761 days. Weight 0.14968.
  • T'Challa's Date of Birth → 1992 Scenes
    • 3846 days. Weight 0.37988.
  • Nakia's Date of Birth → 1992 Scenes
    • 4064 days. Weight 0.35950.
  • Killmonger's Date of Birth → 1992 Scenes
    • 3490 days. Weight 0.41862.
  • Attack on Wakanda → 1992 Scenes
    • 7 days. Weight 3.32752.

Equations

T'Chaka's Date of Birth (TkDoB)

  • October 25.11779, 1943. Weight 0.05505.
  • 1992 Scenes (NS) - 11,961 days. Weight 0.12215.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • TkDoB = (298.11779 × 0.05505 + (NS - 11,961) × 0.12215) ÷ (0.05505 + 0.12215)
    • = TkDoB = (16.4113843 + 0.12215NS - 1461.03615) ÷ 0.17720
    • = TkDoB = (0.12215NS - 1444.62477) ÷ 0.17720
    • = TkDoB = 0.68933NS - 8152.50999
    • = TkDoB + 8152.50999 = 0.68933NS
    • = 8152.50999 = - TkDoB + 0.68933NS

Zuri's Date of Birth (ZDoB)

  • November 11, 1960. Weight 0.07189.
  • 1992 Scenes (NS) - 9761 days. Weight 0.14968.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • ZDoB = (6525 × 0.07189 + (NS - 9761) × 0.14968) ÷ (0.07189 + 0.14968)
    • = ZDoB = (469.08225 + 0.14968NS - 1461.02648) ÷ 0.22157
    • = ZDoB = (0.14968NS - 991.94423) ÷ 0.22157
    • = ZDoB = 0.67554NS - 4476.88870
    • = ZDoB + 4476.88870 = 0.67554NS
    • = 4476.88870 = - ZDoB + 0.67554NS

T'Challa's Date of Birth (TlDoB)

  • April 9.78257, 1977. Weight 0.10070.
  • 1992 Scenes (NS) - 3846 days. Weight 0.37988.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • TlDoB = (12,518.78257 × 0.10070 + (NS - 3846) × 0.37988) ÷ (0.10070 + 0.37988)
    • = TlDoB = (1260.64140 + 0.37988NS - 1461.01848) ÷ 0.48058
    • = TlDoB = (0.37988NS - 200.37708) ÷ 0.48058
    • = TlDoB = 0.79046NS - 416.94844
    • = TlDoB + 416.94844 = 0.79046NS
    • = 416.94844 = - TlDoB + 0.79046NS

Nakia's Date of Birth (NaDoB)

  • June 28, 1982. Weight 0.11759.
  • 1992 Scenes (NS) - 4064 days. Weight 0.35950.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • NaDoB = (14,424 × 0.11759 + (NS - 4064) × 0.35950) ÷ (0.11759 + 0.35950)
    • = NaDoB = (1696.11816 + 0.35950NS - 1461.00800) ÷ 0.47709
    • = NaDoB = (0.35950NS + 235.11016) ÷ 0.47709
    • = NaDoB = 0.75353NS + 492.80044
    • = NaDoB - 492.80044 = 0.75353NS
    • = - 492.80044 = - NaDoB + 0.75353NS

Killmonger's Date of Birth (KDoB)

  • June 8, 1986. Weight 0.13302.
  • 1992 Scenes (NS) - 3490 days. Weight 0.41862.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • KDoB = (15,865 × 0.13302 + (NS - 3490) × 0.41862) ÷ (0.13302 + 0.41862)
    • = KDoB = (2110.36230 + 0.41862NS - 1460.98380) ÷ 0.55164
    • = KDoB = (0.41862NS + 649.37850) ÷ 0.55164
    • = KDoB = 0.75886NS + 1177.17805
    • = KDoB - 1177.17805 = 0.75886NS
    • = - 1177.17805 = - KDoB + 0.75886NS

Attack on Wakanda (AoW)

  • July 19.30767, 1987. Weight 5.10290.
  • 1992 Scenes (NS) - 7 days. Weight 3.32752.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • AoW = (16,271.30767 × 5.10290 + (NS - 7) × 3.32752) ÷ (5.10290 + 3.32752)
    • = AoW = (83,030.85591 + 3.32752NS - 23.29264) ÷ 8.43042
    • = AoW = (3.32752NS + 83,007.56327) ÷ 8.43042
    • = AoW = 0.39470NS + 9846.19548
    • = AoW - 9846.19548 = 0.39470NS
    • = - 9846.19548 = - AoW + 0.39470NS

1992 Scenes (NS)

  • July 1.5, 1992. Weight 20.54795.
  • T'Chaka's Date of Birth (TkDoB) + 11,961 days. Weight 0.12215.
  • Zuri's Date of Birth (ZDoB) + 9761 days. Weight 0.14968.
  • T'Challa's Date of Birth (TlDoB) + 3846 days. Weight 0.37988.
  • Nakia's Date of Birth (NaDoB) + 4064 days. Weight 0.35950.
  • Killmonger's Date of Birth (KDoB) + 3490 days. Weight 0.41862.
  • Attack on Wakanda (AoW) + 7 days. Weight 3.32752.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • NS = (18,080.5 × 20.54795 + (TkDoB + 11,961) × 0.12215 + (ZDoB + 9761) × 0.14968 + (TlDoB + 3846) × 0.37988 + (NaDoB + 4064) × 0.35950 + (KDoB + 3490) × 0.41862 + (AoW + 7) × 3.32752) ÷ (20.54795 + 0.12215 + 0.14968 + 0.37988 + 0.35950 + 0.41862 + 3.32752)
    • = NS = (371,517.20998 + 0.12215TkDoB + 1461.03615 + 0.14968ZDoB + 1461.02648 + 0.37988TlDoB + 1461.01848 + 0.35950NaDoB + 1461.00800 + 0.41862KDoB + 1460.9838 + 3.32752AoW + 23.29264) ÷ 25.30530
    • = NS = (0.12215TkDoB + 0.14968ZDoB + 0.37988TlDoB + 0.35950NaDoB + 0.41862KDoB + 3.32752AoW + 378,845.57553) ÷ 25.30530
    • = NS = 0.00483TkDoB + 0.00591ZDoB + 0.01501TlDoB + 0.01421NaDoB + 0.01654KDoB + 0.13149AoW + 14970.99720
    • = NS - 14970.99720 = 0.00483TkDoB + 0.00591ZDoB + 0.01501TlDoB + 0.01421NaDoB + 0.01654KDoB + 0.13149AoW
    • = - 14970.99720 = 0.00483TkDoB + 0.00591ZDoB + 0.01501TlDoB + 0.01421NaDoB + 0.01654KDoB + 0.13149AoW - NS

So:

  • 8152.50999 = - TkDoB + 0.68933NS
  • 4476.88870 = - ZDoB + 0.67554NS
  • 416.94844 = - TlDoB + 0.79046NS
  • - 492.80044 = - NaDoB + 0.75353NS
  • - 1177.17805 = - KDoB + 0.75886NS
  • - 9846.19548 = - AoW + 0.39470NS
  • - 14,970.99720 = 0.00483TkDoB + 0.00591ZDoB + 0.01501TlDoB + 0.01421NaDoB + 0.01654KDoB + 0.13149AoW - NS

Results

  • T'Chaka's Date of Birth (TkDoB) = 4193.21716. June 24.21716, 1954.
  • Zuri's Date of Birth (ZDoB) = 7621.86302. November 12.86302, 1963.
  • T'Challa's Date of Birth (TlDoB) = 13,739.99161. August 12.99161, 1980.
  • Nakia's Date of Birth (NaDoB) = 13,988.33347. April 18.33347, 1981.
  • Killmonger's Date of Birth (KDoB) = 14,768.17004. June 7.17004, 1983.
  • Attack on Wakanda (AoW) = 16,915.17334. April 23.17334, 1989.
  • 1992 Scenes (NS) = 17,909.74882. January 12.74882, 1992.

One more thing needs to be considered. T'Chaka is older than N'Jobu, but does that naturally work out with these results?
Sterling K. Brown was born on April 5, 1976, making him approximately 14,945 days old at the middle of filming on March 6, 2017. Working back from February 6, 1992, that would put his date of birth on March 8, 1951. This is before T'Chaka's date of birth. So, N'Jobu's date of birth needs to also be factored in.

Second Pass

Now, the events to be dated are:

  • T'Chaka's Date of Birth
  • N'Jobu's Date of Birth
  • Zuri's Date of Birth
  • T'Challa's Date of Birth
  • Nakia's Date of Birth
  • Killmonger's Date of Birth
  • Attack on Wakanda
  • 1992 Scenes

New Evidence

T'Chaka's Date of Birth → N'Jobu's Date of Birth

  • We have to apply the factor that N'Jobu's date of birth is after T'Chaka's. Since the first pass is pulling them the wrong way around, we are simply looking at the minimum amount of time between babies, to pull them into the right order.
    • How long does this suggest between the two events, ideally?: The realistic minimum, 6 months between birth and next conception, plus an average pregnancy. An average pregnancy is 280 days from the beginning of the menstrual cycle, which on average would be about 28 days long, with pregnancy possible from Day 11-28. The middle being Day 19/20, 20 days after the beginning, meaning an average pregnancy is 260 days. So, 182.625 + 260 = 442.625 days.
    • How important/reliable is this piece of evidence?: Factual. Value: 7500.
      • Absolute shortest interpretation: Pregnancy began very shortly after the last, a month or so, and was a few weeks premature, about 35 days (5 weeks). 30.4375 + 260 - 35 = 255.4375 days.
      • Shortest possible interpretation: At least 3 months between birth and next conception, halfway to the realistic gap, and then a couple of weeks premature, about 17.5 days (2.5 weeks). 91.3125 + 260 - 17.5 = 333.8125 days.
      • Shortest realistic interpretation: Realistically 6 months between birth and next conception, plus an average pregnancy, 260 days. 182.625 + 260 = 442.625 days.
      • Longest interpretation: Because, as said above, we're simply applying the minimum realistic time between births to shuffle things into the right order, the longest interpretation will also be the shortest realistic interpretation, 442.625 days.
        • (([255.4375 days] × 1 + [333.8125 days] × 2 + [442.625 days] × 4) ÷ 7) to 442.625 days = 384.79464 days to 442.625 days = 58.83036 inclusive days of leniency. 442.625 days, weight 7500 ÷ 58.83036 = 127.48520.

Overall Result

442.625 days. Weight 127.48520.

N'Jobu's Date of Birth → 1992 Scenes

STERLING K. BROWN

  • Sterling K. Brown was born on April 5, 1976, making him approximately 14,945 days old at the middle of filming on March 6, 2017.
    • How long does this suggest between the two events, ideally?: 14,945 days.
    • How important/reliable is this piece of evidence?: Actor's age, so 4 ÷ age in years instead of days of leniency. Value: 4.
      • Shortest interpretation: N/A.
      • Longest interpretation: N/A.
        • 14,945 days, weight 4 ÷ (14,945 ÷ 365.25) = 0.09776.

Overall Result

14,945 days. Weight 0.09776.

Maths

Collected Evidence

  • T'Chaka's Date of Birth
    • October 25.11779, 1943. Weight 0.05505.
  • Zuri's Date of Birth
    • November 11, 1960. Weight 0.07189.
  • T'Challa's Date of Birth
    • April 9.78257, 1977. Weight 0.10070.
  • Nakia's Date of Birth
    • June 28, 1982. Weight 0.11759.
  • Killmonger's Date of Birth
    • June 8, 1986. Weight 0.13302.
  • Attack on Wakanda
    • July 19.30767, 1987. Weight 5.10290.
  • 1992 Scenes
    • July 1.5, 1992. Weight 20.54795.
  • T'Chaka's Date of Birth → N'Jobu's Date of Birth
    • 442.625 days. Weight 127.48520.
  • T'Chaka's Date of Birth → 1992 Scenes
    • 11,961 days. Weight 0.12215.
  • N'Jobu's Date of Birth → 1992 Scenes
    • 14,945 days. Weight 0.09776.
  • Zuri's Date of Birth → 1992 Scenes
    • 9761 days. Weight 0.14968.
  • T'Challa's Date of Birth → 1992 Scenes
    • 3846 days. Weight 0.37988.
  • Nakia's Date of Birth → 1992 Scenes
    • 4064 days. Weight 0.35950.
  • Killmonger's Date of Birth → 1992 Scenes
    • 3490 days. Weight 0.41862.
  • Attack on Wakanda → 1992 Scenes
    • 7 days. Weight 3.32752.

Equations

T'Chaka's Date of Birth (TkDoB)

  • October 25.11779, 1943. Weight 0.05505.
  • N'Jobu's Date of Birth (NJDoB) - 442.625 days. Weight 127.48520.
  • 1992 Scenes (NS) - 11,961 days. Weight 0.12215.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • TkDoB = (298.11779 × 0.05505 + (NJDoB - 442.625) × 127.48520 + (NS - 11,961) × 0.12215) ÷ (0.05505 + 127.48520 + 0.12215)
    • = TkDoB = (16.4113843 + 127.48520NJDoB - 56,428.13665 + 0.12215NS - 1461.03615) ÷ 127.66240
    • = TkDoB = (127.48520NJDoB + 0.12215NS - 57,872.76142) ÷ 127.66240
    • = TkDoB = 0.99861NJDoB + 0.00096NS - 453.32660
    • = TkDoB + 453.32660 = 0.99861NJDoB + 0.00096NS
    • = 453.32660 = - TkDoB + 0.99861NJDoB + 0.00096NS

N'Jobu's Date of Birth (NJDoB)

  • T'Chaka's Date of Birth (TkDoB) + 442.625 days. Weight 127.48520.
  • 1992 Scenes (NS) - 14,945 days. Weight 0.09776.
    • NJDoB = ((TkDoB + 442.625) × 127.48520 + (NS - 14,945) × 0.09776) ÷ (127.48520 + 0.09776)
    • = NJDoB = (127.48520TkDoB + 56,428.13665 + 0.09776NS - 1461.0232) ÷ 127.58296
    • = NJDoB = (127.48520TkDoB + 0.09776NS + 54,967.11345) ÷ 127.58296
    • = NJDoB = 0.99923TkDoB + 0.00077NS + 430.83429
    • = NJDoB - 430.83429 = 0.99923TkDoB + 0.00077NS
    • = - 430.83429 = 0.99923TkDoB - NJDoB + 0.00077NS

Zuri's Date of Birth (ZDoB)

  • Unchanged.
    • 4476.88870 = - ZDoB + 0.67554NS

T'Challa's Date of Birth (TlDoB)

  • Unchanged.
    • 416.94844 = - TlDoB + 0.79046NS

Nakia's Date of Birth (NaDoB)

  • Unchanged.
    • - 492.80044 = - NaDoB + 0.75353NS

Killmonger's Date of Birth (KDoB)

  • Unchanged.
    • - 1177.17805 = - KDoB + 0.75886NS

Attack on Wakanda (AoW)

  • Unchanged.
    • - 9846.19548 = - AoW + 0.39470NS

1992 Scenes (NS) 1992 Scenes (NS)

  • July 1.5, 1992. Weight 20.54795.
  • T'Chaka's Date of Birth (TkDoB) + 11,961 days. Weight 0.12215.
  • N'Jobu's Date of Birth (NJDoB) + 14,945 days. Weight 0.09776.
  • Zuri's Date of Birth (ZDoB) + 9761 days. Weight 0.14968.
  • T'Challa's Date of Birth (TlDoB) + 3846 days. Weight 0.37988.
  • Nakia's Date of Birth (NaDoB) + 4064 days. Weight 0.35950.
  • Killmonger's Date of Birth (KDoB) + 3490 days. Weight 0.41862.
  • Attack on Wakanda (AoW) + 7 days. Weight 3.32752.
    • With January 1, 1943 as "1", January 2, 1943 as "2", etc.:
    • NS = (18,080.5 × 20.54795 + (TkDoB + 11,961) × 0.12215 + (NJDoB + 14,945) × 0.09776 + (ZDoB + 9761) × 0.14968 + (TlDoB + 3846) × 0.37988 + (NaDoB + 4064) × 0.35950 + (KDoB + 3490) × 0.41862 + (AoW + 7) × 3.32752) ÷ (20.54795 + 0.12215 + 0.09776 + 0.14968 + 0.37988 + 0.35950 + 0.41862 + 3.32752)
    • = NS = (371,517.20998 + 0.12215TkDoB + 1461.03615 + 0.09776NJDoB + 1461.02320 + 0.14968ZDoB + 1461.02648 + 0.37988TlDoB + 1461.01848 + 0.35950NaDoB + 1461.00800 + 0.41862KDoB + 1460.9838 + 3.32752AoW + 23.29264) ÷ 25.40306
    • = NS = (0.12215TkDoB + 0.09776NJDoB + 0.14968ZDoB + 0.37988TlDoB + 0.35950NaDoB + 0.41862KDoB + 3.32752AoW + 380,306.59873) ÷ 25.40306
    • = NS = 0.00481TkDoB + 0.00385NJDoB + 0.00589ZDoB + 0.01495TlDoB + 0.01415NaDoB + 0.01648KDoB + 0.13099AoW + 14,970.89716
    • = NS - 14,970.89716 = 0.00481TkDoB + 0.00385NJDoB + 0.00589ZDoB + 0.01495TlDoB + 0.01415NaDoB + 0.01648KDoB + 0.13099AoW
    • = - 14,970.89716 = 0.00481TkDoB + 0.00385NJDoB + 0.00589ZDoB + 0.01495TlDoB + 0.01415NaDoB + 0.01648KDoB + 0.13099AoW - NS


So:

  • 453.32660 = - TkDoB + 0.99861NJDoB + 0.00096NS
  • - 430.83429 = 0.99923TkDoB - NJDoB + 0.00077NS
  • 4476.88870 = - ZDoB + 0.67554NS
  • 416.94844 = - TlDoB + 0.79046NS
  • - 492.80044 = - NaDoB + 0.75353NS
  • - 1177.17805 = - KDoB + 0.75886NS
  • - 9846.19548 = - AoW + 0.39470NS
  • - 14,970.89716 = 0.00481TkDoB + 0.00385NJDoB + 0.00589ZDoB + 0.01495TlDoB + 0.01415NaDoB + 0.01648KDoB + 0.13099AoW - NS

Results

  • T'Chaka's Date of Birth (TkDoB) = 3648.52976. December 26.52976, 1952.
  • N'Jobu's Date of Birth (NJDoB) = 4090.34670. March 13.34670, 1954.
  • Zuri's Date of Birth (ZDoB) = 7623.18847. November 14.18847, 1963.
  • T'Challa's Date of Birth (TlDoB) = 13,741.54254. August 14.54254, 1980.
  • Nakia's Date of Birth (NaDoB) = 13,989.81194. April 19.81194, 1981.
  • Killmonger's Date of Birth (KDoB) = 14,769.65897. June 8.65897, 1983.
  • Attack on Wakanda (AoW) = 16,915.94776. April 23.94776, 1989.
  • 1992 Scenes (NS) = 17,911.71088. January 14.71088, 1992.
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