'Special' in the Bible

Paul, an apostle (not commissioned and sent from men nor through the agency of man, but through Jesus Christ—the Messiah—and God the Father, who raised Him from the dead),

Nor did I [even] go up to Jerusalem to those who were apostles before me; but I went to Arabia and stayed awhile, and afterward returned once more to Damascus.

But I did not see any other apostle except James, the [half] brother of the Lord.

You observe special days, months, seasons, and years.