Haar calculated 1900/02 only 28 days, 29 days and excel, excel there bug? Rt Haar calculated 1900/02 only 28 days, 29 days and excel, excel there bug? Yes 28 days. Haar calculated 1900/02 only 28 days, 29 days and excel, excel there bug? Such a thing? -_- Haar calculated 1900/02 only 28 days, 29 days and excel, excel there bug? 1900 was not a leap year, is 28 days. [ Closed window ]