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.

This story was updated to add new information. Spring has sprung, bringing warmer days and blooming flowers. Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere ...

The vernal equinox signals the astronomical start of spring in the Northern Hemisphere, with the sun crossing above Earth's equator, moving from south to north, at 5:01 a.m. EST (0901 GMT) on ...

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.

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.

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.