Tomorrow's the day when, technically, Old Man Winter is "outta here!" Is there anyone who's not happy about this fact? (If so, maybe seeing a therapist is in order.) According to the Old Farmer's Almanac, spring begins with the vernal equinox on March 20 at 11:57 a.m. CDT (Evansville time). So along with the warmer temps, longer daylight hours, birds and greening plants, let's delve into the vernal equinox.