Is the Estimated Tax Payment Due?

When i think about first ter is january first through march 30 first. So our first payment is due april fifteenth. That's ex sense, common sense. Second quarter, april first, june thirtieth. When dis that second tax payment due? June fifteenth,. At a minute, that doesn't make sense. Third quarter in september thirieth. Gs, it makes absolutely no sense. And the wind is aprilfifteenth, june fifteenth, september fifteenth, january fift so te olnam here."