December 19, 2025
1:00 AM EST
Comet 3I/ATLAS (C/2025 N1 (ATLAS)) closest approach to Earth
https://science.nasa.gov/solar-system/comets/3i-atlas/3i-atlas-facts-and-faqs/
https://www.space.com/astronomy/comets/what-time-will-interstellar-comet-3i-atlas-be-closest-to-earth-on-dec-19