I believe Jesus purposely kept dates of events from us so we would not worship days and times.
But we read in Rom 14:1 Him that is
weak in the faith receive ye, but not to doubtful disputations.
If you read what is being spoke of as being weak, it pertains to observing days, and not eating certain foods.
Rom 14:4 Who art thou that judgest another man's servant? to his own master he standeth or falleth. Yea, he shall be holden up: for
God is able to make him stand.
And notice Rom 14:3 . . . . .
God hath received him.
Even things that were meant to be against Paul he rejoiced in that Christ was preached. Why would we protest such occasions where the near total world hears of Jesus' birth and death for instance?
Php 1:18 What then? notwithstanding, every way, whether in pretence, or in truth, Christ is preached; and I therein do rejoice, yea, and will rejoice.
Blessings in Christ Jesus.