The Northern Hemisphere's spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.

That’s because on the equinox, day and night last almost the same amount of time — though one may get a few extra minutes, ...

“The March Equinox marks the start of spring in the Northern Hemisphere. On this day, the sun rises exactly in the east and sets exactly in the west,” PAGASA said.

This Friday will be the longest day of 2025 in the Northern Hemisphere, kicking off the coveted summer season. The 2025 summer solstice is expected to officially start on June 20 at 10:42 p.m. ET ...

It’s just a moment in time. For example, the spring equinox for 2025 is at 5:01 a.m. While we observe the equinox as the first day of spring or fall, it’s just an instant.

While it may already feel like summer in Western New York, the official start of the season, according to the astronomical calendar, is still a little over a week away. This year, the summer solstice ...