the number of days in each month
DAYS IN EACH MONTH. The number of days in each month has remained unchanged for 2000 years (since 45 B.C. in fact, when Julius Caesar introduced the Julian Calendar). Here's a well-known mnemonic rhyme which has been in existence for over 400 years, to indicate the exact number of days in each different month: 30 days hath September, April, June and November,
Month Number of Days Number of Hours Number of Minutes Number of Seconds; January: 31: 744: 44,640: 2,678,400: February: 28: 672: 40,320: 2,419,200: February: 29: 696: 41,760: 2,505,600: March: 31: 744: 44,640: 2,678,400: April: 30: 720: 43,200: 2,592,000: May: 31: 744: 44,640: 2,678,400: June: 30: 720: 43,200: 2,592,000: July: 31: 744: 44,640: 2,678,400: August: 31: 744: 44,640: 2,678,400: September: 30: 720: 43,200: 2,592,000: October: 31: 744: 44,640