Or more properly, in the northern hemisphere, today is the vernal equinox, derived for the Latin vernal for “spring” and equinox for “equal night.” And that means it’s officially spring, even if there’s still snow on the ground or a blizzard in the forecast.

For folks south of the equator, today’s the beginning of autumn.

Either way, the date usually falls on March 20 or 21 – the 19^th is more of a rarity, with the next one not until 2044. (Hmm, looking that far ahead, I’m not seeing any on the 21^st. I’ll let the experts argue.) The problem arises in the fact the Earth doesn’t circle the sun in exactly 365 days – there’s that nagging quarter-day that gives us our Leap Year and its February 29, which we just passed.

That said, let’s allow ten other items spring up. Remember, in much of the world, we’re coming out of hibernation, of one sort or another.

1. The spring and fall equinoxes are the only two times during the year when the sun rises due east and sets due west. As we’re discovering the ancients knew and celebrated.
2. If you were standing at the North Pole today, you would see the sun skim across the horizon, beginning six months of uninterrupted daylight. At the South Pole, of course, it would mark the start of six months of darkness.
3. Spring is definitely in the air. With the ability to carry more moisture than it had in winter, the air delivers more scents, such as cut grass, flowers, even the damp earth. That also means that airborne allergies resurface. Watch those pollen counts in the weather forecast!
4. Springtime is the most popular time to buy or sell a house, pushing property prices to their highest. Winter cold dissuades most people from moving till the temperatures warm. For families with children, the end of the school year is a factor, too.
5. By definition, Western Easter falls on the first Sunday after the first full moon after the spring equinox, as early as March 22, though that won’t happen again until 2285. The calculations are a bit more complicated for the Eastern Orthodox, where Easter comes no earlier than April 4 or as late as May 8.
6. Babies delivered in the springtime have the highest propensity of developing schizophrenia, bipolar disorder, major depression, and anorexia, according to at least one study. On the other hand, for kids in general, it’s the season when they grow the fastest.
7. While springtime is usually portrayed as sunshine and roses, it has its dark sides. For example, Facebook found it’s the highest seasons for couples to break up their link, along with the two weeks before Christmas. The lowest breakup times were from August through October as well as Christmas Day.
8. In North America, tornadoes and thunderstorms are most pronounced than through the rest of the year.
9. Spring fever is more than a common phrase, for good reason. Its emotional and physiological symptoms include restlessness, daydreaming, appetite loss, and high heart rate. After cold winters, though, I’d say it beats cabin fever, for sure.
10. Contrary to widespread impressions of suicide rates rising during the winter, especially around the holidays, self-inflicted deaths are highest in April, May, and June. are when suicide rates are highest. There’s also an increase in manic behaviors and worsening bipolar disorder symptoms.