Determination of the day of the week *104804 + 4, "n" = 104804 and "k" = 4 which implies that August 13, 2009 is the fourth day into the 104805th week since 01/01/0001. 13 August 2009 is Thursday; therefore, the first day of the week must be Monday, and it is concluded that the first day 01/01/0001 of the calendar is "Monday". Based on this, the remainder of the ratio "Base/7", defined above as "k", decides what day of the week it is. If "k" = 0, it's Monday, "k" = 1, it's Tuesday, etc. Determination of the day of the week The determination of the day
Ogof Dydd Byraf Over the years this cave had been under threat by the quarry operations, but it is now protected as an SSSI. and owned by North Wales Wildlife Trust Ogof Dydd Byraf Ogof Dydd Byraf is a cave which extends under Esclusham Mountain in north-east Wales from its entrance in the south face of the Minera Limeworks quarry. It was originally discovered and explored in 1964 by the Wrexham Caving Club, before they were merged into the North Wales Caving Club. After a short series of mined passages there is a narrow 10 metre pitch into the main levels consisting of