- On November 19, 2021, Earth will experience a partial lunar eclipse lasting for 6 hours and 2 minutes.
- No partial lunar eclipse has lasted longer since 1440, and none will last this long again until 2669.
- Three reasons account for this eclipse lasting so long, explaining the relative rarity of events like these.


November 19, 2021's lunar eclipse is the longest in 600 years - Big Think