With the onset of astronomical spring days become longer than nights.

In Latvian belief says: the wind will blow on the day of the onset of spring, this will blow all the summer. It is also noted that the early spring promises a good summer, and if spring snow melts quickly, the summer will be a flood.

In turn, meteorological spring arrives when the average daily temperature is above zero degrees.

The astronomical summer this year will begin at 1.34 on June 21, autumn — 17.21 22 September, and winter is in 12.44 on 21 December.