When Is Spring Equinox?
The Vernal (Spring) Equinox in the Northern Hemisphere is in March. In the Southern Hemisphere, it's in September.
Home Sun & Moon Seasons
Current Season
Spring 2021
Start (March Equinox)Mar 202:37 amDuration 92 days, 17 hrs, 54 minsNext Season
Summer 2021
Start (June Solstice)Jun 208:32 pmDuration93 days, 15 hrs, 49 mins
Autumn 2021
Start (September Equinox)Sep 2212:21 pmDuration 89 days, 20 hrs, 38 mins
Winter 2021-2022
Start (December Solstice)Dec 218:59 amDuration 88 days, 23 hrs, 34 mins
Countries define seasons differently. This calculator refers to astronomical seasons, not meteorological seasons. All times are local time for Tucson.
Solstices & Equinoxes for Tucson
| Year | March Equinox | June Solstice | September Equinox | December Solstice | ||||
|---|---|---|---|---|---|---|---|---|
| 2016 | Mar 19 | 9:30 pm MST | Jun 20 | 3:34 pm MST | Sep 22 | 7:21 am MST | Dec 21 | 3:44 am MST |
| 2017 | Mar 20 | 3:28 am MST | Jun 20 | 9:24 pm MST | Sep 22 | 1:01 pm MST | Dec 21 | 9:27 am MST |
| 2018 | Mar 20 | 9:15 am MST | Jun 21 | 3:07 am MST | Sep 22 | 6:54 pm MST | Dec 21 | 3:22 pm MST |
| 2019 | Mar 20 | 2:58 pm MST | Jun 21 | 8:54 am MST | Sep 23 | 12:50 am MST | Dec 21 | 9:19 pm MST |
| 2020 | Mar 19 | 8:49 pm MST | Jun 20 | 2:43 pm MST | Sep 22 | 6:30 am MST | Dec 21 | 3:02 am MST |
| 2021 | Mar 20 | 2:37 am MST | Jun 20 | 8:32 pm MST | Sep 22 | 12:21 pm MST | Dec 21 | 8:59 am MST |
| 2022 | Mar 20 | 8:33 am MST | Jun 21 | 2:13 am MST | Sep 22 | 6:03 pm MST | Dec 21 | 2:48 pm MST |
| 2023 | Mar 20 | 2:24 pm MST | Jun 21 | 7:57 am MST | Sep 22 | 11:50 pm MST | Dec 21 | 8:27 pm MST |
| 2024 | Mar 19 | 8:06 pm MST | Jun 20 | 1:50 pm MST | Sep 22 | 5:43 am MST | Dec 21 | 2:20 am MST |
| 2025 | Mar 20 | 2:01 am MST | Jun 20 | 7:42 pm MST | Sep 22 | 11:19 am MST | Dec 21 | 8:03 am MST |
| 2026 | Mar 20 | 7:45 am MST | Jun 21 | 1:24 am MST | Sep 22 | 5:05 pm MST | Dec 21 | 1:50 pm MST |
| * All times are local time for Tucson. Dates are based on the Gregorian calendar. Times adjusted for DST if applicable. Current year is highlighted. | ||||||||
The Seasons Calculator shows the times and dates of Vernal (Spring) & Autumnal (Fall) equinoxes and Summer and Winter solstices all over the world.
Learn more about equinoxes and solstices
When Is Summer Solstice?
The summer solstice in the Northern Hemisphere is in June, while in the Southern Hemisphere, it's in December.
When Is Fall Equinox?
The fall (autumnal) equinox in the Northern Hemisphere is in September. In the Southern Hemisphere, it's in March.
When Is Winter Solstice?
The Winter solstice in the Northern Hemisphere is in December, while in the Southern Hemisphere, it's in June.
March Equinox
March equinox marks the beginning of spring in the Northern Hemisphere. It is the Southern Hemisphere's autumnal/fall equinox.
June Solstice
The June solstice is the longest day of the year in the Northern Hemisphere & the shortest day in the Southern Hemisphere.
September Equinox
The Sun shines directly on the Equator on the September equinox and the length of day and night is nearly equal, but not quite.
December Solstice
The December solstice is the summer solstice in the Southern Hemisphere and the winter solstice in the Northern Hemisphere.
Astronomy Calculators
- Moon Calculator – Find times for moonrise, moonset and more.
- Moon Phase Calendar – Calculate moon phases for any year.
- Sunrise Calculator – Find times for sunrise, sunset and more.
- Day and Night World Map – See which parts of the Earth are currently illuminated by the Sun.
More Information
Calendar Tools
- Calendar for 2021
- Calendar Generator – Create a calendar for any year.
- Duration Between Two Dates – Calculates number of days.
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