First day of 2023
- First day of 2023 winter
- First day of 2023 nfl season
- First day of 2023 school year
- First day of 2023 tax year
- First day of 2023 nba season
- First day of 2023 mlb season
- First day of 2023 tax filing
- First day of fall 2023
- First day of hanukkah 2023
- First day of spring 2023
- First day of advent 2023
- First day of summer 2023
- First day of school 2023
- First day of autumn 2023
- First day of winter 2023 canada