When Is Mardi Gras 2025 Dates And Times. The official start of carnival season. Mardi gras, fat tuesday, will next be celebrated in louisiana on tuesday, march 4, 2025.

Fat tuesday is the last day of the carnival season as it always falls the day before ash wednesday, the first day of lent. In 2027, it’s even earlier, february 9.) here’s everything you need to know about.