South Boulder Airport Sun forecast calculated mathematically.South Boulder Airport Sun Times Statistics
Daylight Hours
Solar Events
Autumnal Equinox Day/Night Nearly Equal
22 September, 2025Spring Equinox Day/Night Nearly Equal
20 March, 2026Winter Solstice Shortest Day
21 December, 2025Summer Solstice Longest Day
20 June, 2025Next Partial Solar Eclipse
14 January, 2029 8:27-11:16 amNext Total Solar Eclipse
-Next Annular Solar Eclipse Ring of Fire
10 March, 2100 5:11-5:15 pm