markmccaughrean, 
It’s total solar eclipse day.
They happen somewhere on Earth once every 18 months or so.
But most people can’t afford to go chasing them, so the better question is how long you’d have to wait to see one where you live.
On average, it takes 375 years.
So if you’re lucky enough to be somewhere in North America experiencing totality today:
Put down your phone & camera during the main event, watch, be amazed, & embrace being made from starstuff 🌞🌑
https://www.almanac.com/total-solar-eclipses-how-often-do-they-happen
