Lunar calendar or crescent moons and others employing detailed calculations. Since each lunation is approximately days (29 days, 12 hours, 44 minutes, 3 seconds, or days), it is common for the months of a lunar calendar to alternate between 29 and 30 days. Since the period of twelve such lunations, a lunar year, is only 354 days, 8 hours, 48 minutes, 34 seconds ( days), purely lunar calendars lose around 11 days per year relative to the Gregorian calendar. In purely lunar calendars like the Islamic calendar, the lack of intercalation causes the lunar months to cycle through all the seasons of
Brno 2 Hours 30 Minutes in the Czech Republic. Brno 2 Hours 30 Minutes The Brno 2 Hours 30 Minutes was a sports car endurance race held at the Automotodrom Brno in Brno, Czech Republic. The race was first held in 1988 as a round of the World Sportscar Championship. It was revived in 1997 for the International Sports Racing Series, and continued until 2002 under the FIA Sportscar Championship. It has since been absorbed into the 24H Series, which in 2015 organised the Hankook 12 Hours Epilog of Brno, and in 2016 the Hankook 24 Hours Epilog of Brno. This was the first ever