To find the current moon illumination percentage, you can use a reliable astronomical calendar or astronomy website. Some examples include:
1. The Old Farmer's Almanac: https://www.almanac.com/astronomy/moon/
2. TimeandDate: https://www.timeanddate.com/astronomy/moon/
3. Sky and Telescope: https://www.skyandtelescope.com/astronomy-news/observing-highlights/
4. Stellarium (Software): https://stellarium-web.org/
These resources provide updated information about the moon's illumination and various other astronomical details. Please keep in mind that the moon's illumination changes over time, so the percentage may be different when you check.