From the Antiochian Orthodox, fast begins at midnight Clean Monday rather than immediately after the Forgiveness Sunday Vespers.**
A Note about Fasing:** There are two distinct types of fasts: an Ascetical Fast and a Eucharistic Fast. An ASCETICAL FAST (meaning a day or season when we abstain from certain foods, drinks and activities) begins at the midnight preceding the fast day (or the first day of the fasting season) and ends at the following midnight (or that of the final day of the fasting season). For example, the usual Wednesday fast begins at midnight on Tuesday and ends at midnight on Wednesday; likewise, the usual Friday fast begins at midnight on Thursday and ends at midnight on Friday. The Apostles Fast, a fasting season of variable duration, begins at midnight on All Saints Sunday and ends at midnight on June 28th; likewise, the Dormition Fast begins at midnight on July 31st and ends at midnight on August 14th, and the Nativity Fast begins at midnight on November 14th and ends at midnight on December 24th. The Great Fast (which includes both the Forty Days and Holy Week) begins at midnight on Forgiveness Sunday (not immediately following Forgiveness Vespers) and ends at midnight on Great and Holy Saturday.