Full Moon and sleep

13 October 2026 at 12:00 BST: waxing crescent, 8.1% illuminated, 2.80 days since new Moon.

UK default: Europe/London (GMT/BST).
Phase
Waxing Crescent
Illumination
8.13%
Lunar age
2.798 days
Phase angle
32.71°
Earth–Moon distance
398,069 km
Brown lunation
1284

What sleep studies found

A 2013 laboratory analysis of 33 adults found about 20 minutes less sleep around full Moon and five minutes longer to fall asleep. A 2015 population study of 2,125 people found no significant lunar-phase difference in objective or subjective sleep. The studies used different populations and observation settings.

Keep a dated diary of bedtime, waking, room light and how rested you feel. Use the date control above to add the actual phase to each entry.

Study reports: Cajochen et al., 2013 and Haba-Rubio et al., 2015.