wedding day

noun2

1. •
   The day or date when a couple weds each other, initiating marriage.

   • John discovered himself to his parents, and Elizabeth to hers, and the wedding-day was soon fixed, and such a wedding was never seen; before or since in the island of Rügen[.] — 1828
2. •
   (old-fashioned) A wedding anniversary.

   • ... both Mr. and Mrs. Giblett returned it , and came to a party which we had at our house , according to annual custom , for the purpose of celebrating our Wedding day[…] — 1816