Computus week before the Gregorian Easter in 1724, 1744, 1778, 1798, etc. The Easter cycle groups days into lunar months, which are either 29 or 30 days long. There is an exception. The month ending in March normally has thirty days, but if 29 February of a leap year falls within it, it contains 31. As these groups are based on the lunar cycle, over the long term the average month in the lunar calendar is a very good approximation of the synodic month, which is days long. There are 12 synodic months in a lunar year, totaling either 354 or
Banque Populaire V (Van Peteghem / Lauriot-Prévost) designed this G-Class maxi multihull. The trimaran was built by the shipyard CDK Technologies in Lorient. She was launched at the end of August 2008 in Lorient. In 2009 she made her first attempt across the northern Atlantic from west to east. On Sunday 2 August 2009, she established the new record in 3 days, 15 hours, 25 minutes and 48 seconds (an average speed of 32.94 knots), beating the previous record, held by Franck Cammas on Groupama 3, by more than 12 hours. During the attempt she also broke the 24-hour distance twice, first with