Why meteorological spring starts Tuesday, not on equinox

Monday marks the start of Astronomical Spring

March 1 marks beginning of meteorological spring

What is the March equinox, and when the hell does Spring actually start anyway?

Are we there yet? Spring is almost here

Meteorological spring has started but not astronomical spring. What's the difference?

What is meteorological spring?

Spring starts Thursday with the vernal equinox. What does that mean? - Los Angeles Times

First day of spring is March 20: Here's the science behind the vernal equinox

Average temps for the start of spring

First day of spring 2023: Winter is over, or is it?

Meteorological spring begins today, Portland keeps snow chances

The Spring Equinox comes this week. What is it?

Meteorological vs Astronomical Seasons