Carnival Tuesday, also known as Mardi Gras, is the final day of the Carnival season, celebrated the day before Ash Wednesday. It marks the last opportunity for feasting and festivities before the start of Lent, a period of fasting and reflection in the Christian calendar. On this day, many communities host parades, parties, and various cultural events. People often wear colorful costumes and masks, enjoying traditional foods like king cake and other rich dishes. The celebrations can vary widely by region, with notable festivities occurring in places like New Orleans and Rio de Janeiro.