Seasons
Earth experiences four seasons: spring, summer, fall, and winter. This happens because our planet is tipped on its axis and the two poles point to the same directions in space all year.
Upcoming Equinox and Solstice Events at Griffith Observatory
Summer occurs on the hemisphere that is tipped toward the Sun. The Sun is high in the sky, and the days are longer. The hemisphere tilted away from the Sun experiences winter. The Sun is lower in the sky, and days are shorter. The seasons change on predictable schedules, which are listed below (times for Los Angeles).
| 2016 | ||
| Spring equinox | 9:30 p.m. PDT | March 19 |
| Summer solstice | 3:34 p.m. PDT | June 20 |
| Autumn equinox | 7:21 a.m. PDT | September 22 |
| Winter solstice | 2:44 a.m. PST | December 21 |
| 2017 | ||
| Spring equinox | 3:29 a.m. PDT | March 20 |
| Summer solstice | 9:24 p.m. PDT | June 20 |
| Autumn equinox | 1:02 p.m. PDT | September 22 |
| Winter solstice | 8:28 a.m. PST | December 21 |
| 2018 | ||
| Spring equinox | 9:15 a.m. PDT | March 20 |
| Summer solstice | 3:07 a.m. PDT | June 21 |
| Autumn equinox | 6:54 p.m. PDT | September 22 |
| Winter solstice | 2:23 p.m. PST | December 21 |
| 2019 | ||
| Spring equinox | 2:58 p.m. PDT | March 20 |
| Summer solstice | 8:54 a.m. PDT | June 21 |
| Autumn equinox | 12:50 a.m. PDT | September 23 |
| Winter solstice | 8:19 p.m. PST | December 21 |
| 2020 | ||
| Spring equinox | 8:50 p.m. PDT | March 19 |
| Summer solstice | 2:44 p.m. PDT | June 20 |
| Autumn equinox | 6:31 a.m. PDT | September 22 |
| Winter solstice | 2:02 a.m. PST | December 21 |
| 2021 | ||
| Spring equinox | 2:37 a.m. PDT | March 20 |
| Summer solstice | 8:32 p.m. PDT | June 20 |
| Autumn equinox | 12:21 p.m. PDT | September 22 |
| Winter solstice | 7:59 a.m. PST | December 21 |
| 2022 | ||
| Spring equinox | 8:33 a.m. PDT | March 20 |
| Summer solstice | 2:14 a.m. PDT | June 21 |
| Autumn equinox | 6:04 p.m. PDT | September 22 |
| Winter solstice | 1:48 p.m. PST | December 21 |
| 2023 | ||
| Spring equinox | 2:24 p.m. PDT | March 20 |
| Summer solstice | 7:58 a.m. PDT | June 21 |
| Autumn equinox | 11:50 p.m. PDT | September 22 |
| Winter solstice | 7:27 p.m. PST | December 21 |
| 2024 | ||
| Spring equinox | 8:06 p.m. PDT | March 19 |
| Summer solstice | 1:51 p.m. PDT | June 20 |
| Autumn equinox | 5:44 a.m. PDT | September 22 |
| Winter solstice | 1:20 a.m. PST | December 21 |
| 2025 | ||
| Spring equinox | 2:01 a.m. PDT | March 20 |
| Summer solstice | 7:42 p.m. PDT | June 20 |
| Autumn equinox | 11:19 a.m. PDT | September 22 |
| Winter solstice | 7:03 a.m. PST | December 21 |