Lunar calendar traces of its origin in the earlier lunar calendar, which continued to be used alongside it for religious and agricultural purposes. Present-day lunisolar calendars include the Chinese, Hindu, and Thai calendars. Synodic months are 29 or 30 days in length, making a lunar year of 12 months about 11 days shorter than a solar year. Some lunar calendars do not use intercalation, such as most Islamic calendars. For those that do, such as the Hebrew calendar, the most common form of intercalation is to add an additional month every second or third year. Some lunisolar calendars are also calibrated by
America-class steamship "Europa" was also chartered as a troopship during the Crimean War and continued in Cunard service until 1867, when she was sold and converted to a sailing ship. Won the eastbound record in 1849 with a Halifax–Liverpool voyage of 8 days 12 hours 44 minutes, an average of . During the Crimean War, she remained on the Halifax route and was sold for conversion to a sailing ship in 1866. Took the Blue Riband in May 1850 with a Liverpool–Halifax run of 8 days 14 hours 50 minutes, an average of . "Asia" also remained on the Halifax route during