For this reason, when the Festival which means pass or to move into. Songkran is a monthly basis because the Sun moves from one zodiac sign Zodiac to the next 1 month time.
This is why when Songkran means passing or moving into. Songkran is required on a monthly basis. Because the sun is moving from one zodiac sign. One zodiac sign to another, which is next month for the first time anywhere.
Because of this, when the festival means through or move into the day is to have every month. Because the sun is moving from the zodiac. To sign one, which is the next month 1 times always