Spring Equinox 2025 Date And Time. Spring will last from march 20. Equinox means equal day and night (12 hours each).
America the exact moment of the autumnal equinox in 2025 is 22. In the northern hemisphere, the astronomical start of spring, also known as the spring equinox, will occur on thursday, march 20, at 5:01 am edt in 2025.