You may catch a glimpse of the second blue moon of the year on Saturday - the last blue moon until 2020.
"After 10 straight days with plenty of clouds, Western Washington will have a chance to see the last Blue Moon until October 2020 rise tonight with partly cloudy skies," the National Weather Service Seattle office tweeted.
Moonrise Saturday in Seattle is 8:02 p.m. There's also a chance to see the Space Station at 9:23 p.m. with two minutes passing from the Northwest to the Northeast in the skies, said the NWS Seattle.
Ironically, blue moons aren't actually blue and they aren't rare. They look like a typical pearly-gray full moon and show up, on average, once about every 2.7 years, according to space.com. A blue moon is the second full moon in a calendar month, NASA reports.
The fourth full moon of the year is also known as a sap moon, because it marks the time of year sap is harvested from trees, according to The Old Farmer's Almanac.
The best places to view Easter weekend's blue sap moon will be in the south, southwest and West Coast, meteorologist Linda Lam said on weather.com.
The last blue moon sighting was on Jan. 31, as part of a super blue blood moon lunar eclipse.
