Jan 11, 2026 · Astronomically speaking, the first day of spring is marked by the spring equinox, which falls on March 19, 20, or 21. The equinox happens at the exact moment worldwide, although our …

Dec 31, 2025 · Astronomical spring starts with the vernal equinox, when day and night are roughly equal, and ends the day before the summer solstice. Meteorological spring runs from March 1 to May …

Mar 12, 2025 · Spring arrived on the 21st of March during most of the 20th century, but the event slides earlier and earlier during the 400-year Gregorian calendar cycle. The final March 21 equinox was in …

Dec 9, 2025 · According to the meteorological definition of seasons, which is based on temperature cycles and the Gregorian calendar, the first day of fall is usually considered to be September 1 in the …

Dec 11, 2025 · Therefore, the summer solstice is not considered to be the first day of summer, meteorologically speaking. Astronomically, however, the first day of summer is said to be when the …

2 days ago · See the average first and last frost dates for locations across the U.S. and Canada with our frost dates calculator. Simply enter your postal code to see when the last spring frost date and first …

Dec 4, 2025 · The date of Easter is tied to the relationship between the Paschal Full Moon, whose dates are based on calculations made long ago, and the Church’s fixed date of the March equinox (also …

Use our 2026 Frost Dates Calculator to find the average date of the last spring frost (and the first fall frost) in your area—based on the nearest official weather station and your ZIP or Postal Code.

Nov 24, 2025 · May Day (May 1) is a holiday rich in folklore, celebrating the return of spring! As a child, many of us remember our grandparents or parents leaving delightful little May Day baskets, and …