The century’s longest partial lunar eclipse will take place tonight (November 19, 2021).
Tonight’s partial lunar eclipse will last exactly 3 hours, 28 minutes, and 23 seconds, and 97% of the Moon will be covered in Earth’s shadow. NASA says it will be an almost total lunar eclipse.
This lunar eclipse will also be the longest partial lunar eclipse of the last 580 years. The eclipse can be seen from Oceania, the Americas, Eastern Asia, Northern Europe, and Indonesia. It will be visible from all 50 states in the US starting at 2:19am EST (11:19pm PST) and ending at 05:47am EST (1:47am PST).
It’s actually the longest partial lunar eclipse in a millennium, clocking in at 3 hours, 28 minutes and 23 seconds. There hasn’t been a longer partial lunar eclipse since February 18, 1440 (3 hours, 28 minutes, 46 seconds) and it will remain the longest partial lunar eclipse for 648 years until February 8, 2669 (3 hours, 30 minutes, and 2 seconds). There will be a longer total lunar eclipse on November 8, 2022.