startingday
nounUK /ˈstɑːtɪŋ deɪ/
US /ˈstɑːrtɪŋ deɪ/
The first day of something, like a race or a school year.
The startingday of summer camp is always exciting.
OTHER MEANINGS
2. The day when a new job or activity begins.
Her startingday at the bakery is next Monday.
3. The day a race or competition begins.
Fans gathered early on the startingday of the tournament.
4. The first day of a season or event.
The startingday of the festival brought big crowds.