Both Temples were destroyed on the 9th of Av.
The Jews were expelled from Spain on the 9th of Av 5252 (8/11/1492).
The Jews were expelled from England on the 9th of Av 5050 (7/25/1290).
5050 is the 100th triangle number.
The 107th triangle number is 5778.
From the first day of 5778 (Tishrei 1 sunset on 9/20/2017) to sunset of 9/11/2021 will be 2 x 726 (harpazo) days.
5050 to 5778 equals: 2 x 364 years. There were 364 days in Enoch's year and 364 is the composite number gematria of 'JESUS CHRIST'.
366 days in a leap year: 5050 + 2 x 366 equals: 5782. 9/11/2021 is the 6th day of 5782. God rested on the 7th day.
I hope we 'leap' from this world by 9/11/2021.
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5781 is a normal Jewish year of 12 lunar cycles. Av is the 11th month of the Jewish civil year 5781. So, the 9th of Av is 9/11.
The 9th of Av starts at sunset on 7/17/2021. 7/17/2021 to 9/11/2021 will be 57 inclusive days.
57 = 3 x 19. There are 19 years in a Jewish calendar cycle. 57 circles (years) form a perfect symmetrical pattern. See my attached diagram.
Seven of these circles of 57 circles plus the circle around that set has 400 total circles. I believe this design was a part of God’s plan for the 400-year Gregorian calendar cycle.