Solar term 10 of 24
Summer Solstice夏至
The longest day of the year.
- Sun at
- 90°
- Date in 2026
- 21 Jun
- Type
- Mid-month
- Sunrise
- 寅
Sunrise
In Beijing, as the book records it, the sun rises 31°18′ north of due east.
Three pentads
Each term splits into three five-day pentads, each named for a sign in nature.
- 1鹿角解Deer shed their antlers
- 2蜩始鳴Cicadas sing
- 3半夏生Pinellia grows
Sources Xie Ji Bian Fang Shu, vol. 12.