4 Bible Verses about Calendars

Now no one knows anything about that day or hour, not even the angels in heaven, but only my Father.

but when the time had fully expired, God sent forth his Son, born of a woman, born under the Law,

He replied, ??- "It is an evil and disloyal generation that craves a Sign, and no Sign shall be given to it except the Sign of Jonah." Then he left them and went away.

The birth of [Jesus] Christ came about thus. His mother Mary was betrothed to Joseph, but before they came together she was discovered to be pregnant by the holy Spirit.