When do Catholics stop their Lenten promises?

Lent formally ends at l200 Hours ( Noon, local time) on Holy Saturday. All dietary restrictions are OFF.

Roman Catholic AnswerLent, in the Church, Latin rite (in other Words, most Catholics in the English speaking world) ends immediately before the Mass in the evening of Holy Thursday, which starts the Easter Triduum. As Good Friday and Holy Saturday are both, technically, fast days, most people continue giving up whatever they gave up until the Easter Vigil begins after dark on Saturday night.