One of the oldest gold mines in the province, the Kromdraai Gold Mine, is an interesting place to visit for anyone looking to learn more about Gautengâs gold rush history. Only a 40-minute drive north of Johannesburg, the Kromdraai Gold Mine is located in the scenic Cradle of Humankind World Heritage Site, one of the major tourist attractions in South Africa. Gold is central to the history of Gauteng and it was only as recently as 1886 that the city of Johannesburg was founded, mainly due to the vast amounts of gold to be found in the area.
4 centuries is 400 years and a leap year occurs every 4 years, therefore 100 leap years will occur in 4 centuries. 365*300 + 366*100 = 146100 days 1440 minutes in 1 day â¦1440*146100 = 210384000 minutes in 400 years.
This means that the calendar has a cycle of 400 years as far as leap years are concerned. Every 400 years the same leap year schedule appears. During that cycle, 97 leap years occur (once every 4 years except 3 century changes, so 400 / 4 - 3 = 97). By pure coincidence, this happens to be just an integral number of weeks as well This means that every 400 years the Gregorian calendar repeats itself exactly on the same days of the week!