How Mardi Gras Dates Are Determined
Mardi Gras is one of the most exciting and colorful celebrations of the year. But if you've ever wondered why it falls on different dates each year, you're not alone.

Mardi Gras dates actually depend on Easter, making this holiday a bit of a moving target on the calendar. Let’s dive into why Mardi Gras changes every year and how these dates are calculated.
How the Date of Mardi Gras Is Calculated
Mardi Gras is the grand finale of the Carnival season, marking the last day before Lent begins on Ash Wednesday. But why is Mardi Gras connected to Easter? It all comes down to timing. Mardi Gras always takes place 47 days before Easter Sunday. So, because Easter moves around every year, Mardi Gras does too.
Why 47 Days?
The 47-day span includes 40 days of Lent, which are observed as days of fasting and repentance, plus an additional seven days of Sundays (which are not counted as fasting days in the traditional practice). Thus, if you count 40 days of Lent and add in the six Sundays that occur during that period, you arrive at a total of 46 days. Mardi Gras, the day of celebration before Lent begins, is then one day earlier, resulting in a total of 47 days between Mardi Gras and Easter Sunday.
This means Mardi Gras will always be on a Tuesday between February 3 and March 9.
The Significance of Mardi Gras in Relation to Lent
Mardi Gras is more than just a day of festivities. It marks the last day of indulgence before Lent, a period observed by Catholics and some Protestant churches leading up to Easter. Lent is a time of repentance, fasting, and abstinence, which is why Mardi Gras is filled with celebration, as it’s the “last hurrah” before this somber season begins.
Fun Facts About Mardi Gras Dates
- Earliest and Latest Dates: Mardi Gras can only fall between February 3 and March 9.
- Unique Mardi Gras Dates: The earliest and latest dates for Mardi Gras (February 3 and March 9) only happen about once every 100–150 years.
- Lunar Connection: Because of its connection to the ecclesiastical full moon, Mardi Gras is indirectly tied to the cycles of the moon!
Prepare for Mardi Gras
The changing date of Mardi Gras adds a unique rhythm to the Carnival season. Knowing why it changes can make you appreciate the event even more! Whether you’re a Mardi Gras newbie or a seasoned pro, knowing when the big day falls each year can help you plan ahead and make the most of the season.
Planning to celebrate Mardi Gras? Download the Parade Pal app to track your favorite parades, find the best viewing spots, and get updates in real-time. Happy Mardi Gras!