Why aren’t calendars designed with 13 months of 28 days each?
Why isn't there 13 months in a year?
How many weeks in year? Why does February's 29 days come after 4 years? Why the month February has only 29 days? Why does the 29th of February only come every 4 years? How many days are in a month? Is it healthy to lose 13 pounds in a month? What is shortcuts to remember which months has 31 days? Why do we have 28 or 29 days in February, where as July and August have 31 days consecutively? How many weeks are in a typical school year? How many months is 34 weeks pregnant? Why do the 30 days months go quicker than the 31 day months? Why does February have 28 days? Why 29 in leap years? Why are there seven days in a week? Is it possible to reduce 17 lbs in one month? Can there be 30 days in February? How many days a period can be late? Why do the 30 day months go quicker than the 31 day months? Why do people say a pregnancy is a nine months when it is actually 40 weeks? Why do some people only have 21 days period cycles? Why does february has 28 or 29 days only? Why is my period late every month? Why do periods last so long? Why there are 7 days in a week? What are the months in seasons for Chicago, Midwest? Why are there only 7 days in a week? Should 13 year olds date? Why do clocks have 12 hours? How long does a period last for? Is it too young to be dating at 12 years old? What is a gap year?