The Appropriate Time

If you want your words to have their full effect, choose the
appropriate time to say them. Put before you the words of the
wise man who said: "A word fitly spoken [is] [like] apples of
gold In settings of silver."(Prov 25:11)
If there is a matter which you are concerned about, do not
speak about it to anyone who is busy or tired, or who needs a
rest or is not in the mood to talk. Do not speak to anyone
about it either if he is annoyed or sad about something.
Speak when the ear is ready to listen to your words, and
more preferable when it is eager to listen to you. An
exception to this is a word of reprimand, like that spoken by
John the Baptist to Herod. The important thing to keep before
you is that you say your word when it finds an ear ready to
listen.
(His Holiness Pope Shenouda III)