According solar calculator the National oceanic and atmospheric administration, the duration of daylight in Riga on 21 June will be 17 hours, 52 minutes and 19 seconds. In Latvia the duration of daylight will vary from 17 hours and 32 minutes in Daugavpils region up to 18 hours and 12 minutes to the North Rujiena region.

The duration of the shortest night of the year in Riga is 6 hours and 8 minutes, in other places of Latvia — from 5 hours and 48 minutes in the most distant North Rujiena region near the border with Estonia up to 6 hours and 28 minutes in the most distant South Daugavpils region near the borders with Lithuania and Belarus.

The summer solstice will have at 7.24 am on 21 June, at this time, the sun in the Northern hemisphere will be located at the maximum distance from the celestial equator.