Astronomically speaking, the first day of spring is marked by the spring equinox, which always happens on March 19, 20 or 21. This year, the first day of spring is Thursday, March 20, and the spring season will last until the summer solstice on Friday, June 20.

Daylight savings time will have arrived by the time the vernal equinox heralds the first day of spring in March. Here's what we know.

Temperatures in the Chicago area are more than 20 degrees below normal on Tuesday, but we have good news: spring will be here before you know it. Granted, that blessed date is still a bit more than a month away,