On Friday, May 1, the second full moon of spring will occur — the so-called "Flower Moon." The name is tied to the abundance of spring flowers at this time of year, according to the Old Farmer's Almanac. In Seattle the moon will rise at 9:02 p.m. local time, roughly 40 minutes after sunset, and will shine through the night until 5:46 a.m. on Saturday, when dawn begins. In other cultures this full moon is also called the "Budding Moon," the "Planting Moon," or the "Egg-Laying Moon."
Notably, this May full moon will be the first of two this month. On May 31 we will see a second full moon, known as a "Blue Moon." It will also be one of the farthest of the year — astronomers call it a "micromoon." Because of its greater distance from Earth, the satellite will appear slightly smaller and dimmer than usual, but it will still offer an unforgettable spectacle for night-sky enthusiasts.
Based on: May Day ‘flower moon’ will light up the night. Here’s how to see it