Spring Equinox 2024 Seattle. The spring equinox (march 19, 2024) signals the start of spring in the northern hemisphere, the beginning of autumn in the southern hemisphere, and a rare moment of equal night across the. The sun sets behind the olympic mountains as people cross a street in seattle’s alki neighborhood on the last evening of winter on monday, march 18, 2024.

Spring equinox 2024 (beginning of astronomical spring) on the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic. The vernal equinox arrives on tuesday, march 19, marking the start of the spring season for the.