Seven Sleepers' Day
![Seven Sleepers of Ephesus, Passionary of Weissenau, Cod. Bodmer 127, c. 1170](/Images/godic/202502/10/Codex_Bodmer_127_125v_Detail2046.jpg")
Seven Sleepers' Day (German:Siebenschläfertag) on June 27 is a feast day commemorating the legend of the Seven Sleepers as well as one of the most well-known bits of traditional weather lore (expressed as a proverb) remaining in German-speaking Europe. The atmospheric conditions on that day are supposed to determine or predict the average summer weather of the next seven weeks.