What Day Is Spring 2025. This date also marks the first week of march and 1st quarter (q1) of 2025. 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.
Need to know the exact date of of the first day of spring this year? This date marks the spring equinox in the northern hemisphere.