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12.07.2010 New claim submitted for Nordic Walking, 12 Hours 30.06.2010 New claim submitted for Stair climbing while keeping a football aloft 29.06.2010 New claim submitted for Mental Calculation, Square Roots Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Calendar from Memory - Current world record 1. This record is for the greatest number of days of the week correctly identified from random dates between 1 January 1600 and 31 December 2100. Freddis Reyes Hernandez (Cuba) solved 74 such tasks within one minute at the Mental Calculation World Cup 2010 in Magdeburg, Germany on 5 June 2010 (which - by the way - was Saturday).   Previous verified claims 1. This record is for the greatest number of days of the week correctly identified from random dates between 1 January 1600 and 31 December 2100. Jan van Koningsveld (Germany) broke the record no less than four times on 12 March 2010 in Emden, identifying 63, 66, 69 and finally even 70 dates of the week correctly. 2. This record is for the greatest number of days of the week correctly identified from random dates between 1 January 1600 and 31 December 2100. Yusnier Viera Romero (Cuba) broke the record on 5 December 2009 correctly identifying the days of 59 dates in one minute in Miami, Florida. 3. This record is for the greatest number of days of the week correctly identified from random dates between 1 January 1600 and 31 December 2100. Yusnier Viera Romero (Cuba) broke the record on 18 December 2006 correctly identifying the days of 56 dates in one minute at a TV studio in Havana. The same result has been achieved by Jan van Koningsveld (Germany) on 2 November 2008 at the Memoriad 2008 in Istanbul, Turkey.     The Book of Alternative records - World records, record breakers and more!