最大的是巴西,美國這裏是在New Orleans市.花車遊行.南美,歐洲也有興祝. 澳大利亞不大,和專門同性戀的節日無關.
大齋首日，英文叫Ash Wednesday，是基督教的教會年歷節期大齋期之始。
大齋首日壹定是禮拜三，因為耶穌是在禮拜三被賣的。大齋首日，亦稱聖灰星期三或灰日，因為當天教會會舉行塗灰禮，要把去年棕枝主日祝聖過的棕枝燒成灰，在崇拜中塗在教友的額頭上，作為悔改的象征。
大齋首日是根據復活節的日期前四十天(不計算主日)，因此每年的大齋首日的日期都不同。最早可以是二月四日，最遲是三月十日.
Mardi Gras (French for "Fat Tuesday") is the day before Ash Wednesday, and is also called "Shrove Tuesday" or "Pancake Day". It is the final day of Carnival. It is a celebration that is held just before the beginning of the Christian liturgical season of Lent.
Perhaps the cities most famous for their Mardi Gras celebrations include New Orleans, Mobile, Rio de Janeiro, S?o Paulo, Venice, Salvador da Bahia, and Mazatlán. Many other places have important Mardi Gras celebrations as well. The carnival is an important celebration in most of Europe, and in many parts of Latin America and the Caribbean. Panama's carnivals are gaining notoriety each year, with tourists from the U.S., Latin American and European countries increasing year after year.