First Day Of Spring 2024. Tuesday, mar 19 11:06 pm edt. On the first day of spring, the length of day and night is about the same, lasting around 12 hours each.
In 2024, the spring equinox—aka the first day of spring—occurs on tuesday, march 19, 2024.so, who decides that? This year, the spring equinox falls on wednesday 20 march, and the astronomical spring lasts until the summer solstice.
