The first day of spring 2025 arrives on March 20 at 10:47 UTC, bringing astronomical significance, cultural traditions, and ...

The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in ...

while the September equinox marks the beginning of autumn. The reverse happens in the Southern Hemisphere, according to the National Geographic Society. During an equinox, the Sun is directly ...

The vernal, or spring, equinox was the first of two for the year: 2025's autumnal, or fall, equinox will occur on Monday, Sept. 22. Conversely, solstices mark the most drastic time differences ...

The vernal, or spring, equinox was the first of two for the year: 2025's autumnal, or fall, equinox will occur on Monday, Sept. 22. Conversely, solstices mark the most drastic time differences ...