Hartigan said this weekend’s total lunar eclipse is part of a cycle of lunar eclipses that began on Oct. 25, 1874.
From and including: Sunday, October 25, 1874
To and including: Sunday, January 20, 2019
144 years, 2 months, 27 days ...144 and 227
If you miss this one, you won’t be able to see another total lunar eclipse until 2021. The next total lunar eclipse visible in the U.S. will occur on May 26, 2021. Another total lunar eclipse visible in the U.S. will occur on May 16, 2022.
From and including: Sunday, January 20, 2019
To, but not including Wednesday, May 26, 2021
Result: 857 days
Or 2 years, 4 months, 6 days excluding the end date.
Or 28 months, 6 days excluding the end date.
From and including: Sunday, January 20, 2019
To, but not including Monday, May 16, 2022
Result: 1212 days
Or 3 years, 3 months, 26 days excluding the end date.
Or 39 months, 26 days excluding the end date.
The last identical one occurred on Jan. 9, 2001
From and including: Tuesday, January 9, 2001
To, but not including Sunday, January 20, 2019
18 years, 11 days excluding the end date.
From and including: Tuesday, January 9, 2001
To, but not including Tuesday, September 11, 2001
Result: 245 days
Or 8 months, 2 days excluding the end date.
35 weeks
5880 hours
The next identical one will occur Jan. 31, 2037.
From and including: Sunday, January 20, 2019
To, but not including Saturday, January 31, 2037
Or 18 years, 11 days excluding the end date.
Identical eclipses will occur every 18 years until July 26, 2325, when the cycle ends
From and including: Sunday, October 25, 1874
To, but not including Sunday, July 26, 2325
Result: 164,633 days
Or 450 years, 9 months, 1 day excluding the end date.
Or 5409 months, 1 day excluding the end date.
https://www.nbcnews.com/mach/science/2019-lunar-eclipse-5-things-know-about-super-blood-wolf-ncna960381
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