December solstice

The December solstice, also known as the southern solstice, is the solstice that occurs each December – typically on 21 December, but may vary by one day in either direction according to the Gregorian calendar. In the Northern Hemisphere, the December solstice is the winter solstice (the day with the shortest period of daylight), whilst in the Southern Hemisphere it is the summer solstice (the day with the longest period of daylight). During the December solstice, the Sun is directly over the Tropic of Capricorn, located in the Southern Hemisphere.

UT date and time of equinoxes and solstices on Earth
event equinox solstice equinox solstice
month March June September December
year daytime daytime daytime daytime
2016 2004:312022:352214:212110:45
2017 2010:292104:252220:022116:29
2018 2016:152110:072301:542122:22
2019 2021:582115:542307:502204:19
2020 2003:502021:432213:312110:03
2021 2009:372103:322219:212115:59
2022 2015:332109:142301:042121:48
2023 2021:252114:582306:502203:28
2024 2003:072020:512212:442109:20
2025 2009:012102:422218:192115:03
2026 2014:462108:252300:062120:50
2027 2020:252114:112306:022202:43
2028 2002:172020:022211:452108:20
2029 2008:012101:482217:372114:14
2030 2013:512107:312223:272120:09
2031 2019:412113:172305:152201:56
2032 2001:232019:092211:112107:57
2033 2007:232101:012216:522113:45
2034 2013:182106:452222:412119:35
2035 2019:032112:332304:392201:31
2036 2001:022018:312210:232107:12
Illumination of Earth by the Sun on the day of the December solstice