Why do July and August have 31 days each?
Why does July and August has 31 days?
Why the month February has only 29 days? Why is India's independence day on August 15? Why does a day have 24 hours? Why aren’t calendars designed with 13 months of 28 days each? Why does February have 28 days? Why 29 in leap years? How many days are in a month? Why does february has 28 or 29 days only? Why will the last minute of June 30, 2015 have 61 seconds? Why does February's 29 days come after 4 years? Why are there 24 hours in a day, and how does the lenght of day on Earth compare to the one on Jupiter? Why does the 29th of February only come every 4 years? Calendars: Why did September 1752 have fewer days? What is the fun fact about April? Why does February has only 28 or 29 days? Why not similar to other months? Why do clocks have 12 hours? What are the historical reasons as to why February has 28 days? Why are days of the year biased toward certain days of the week? Why week and month are used to time pregnancy instead of day? Why did many ancient calendars have only 360 days in a year? Shouldn't they have known that it is actually closer to 365 days? Why there are 7 days in a week? Why are there seven days in a week? Why does the solar noon changes every day? If a year contains of 52 weeks, then why did we have 12 months of an unequal number of days rather than 13 months of 4 weeks each? Why does only February has 1 extra day in leap year? Why is the leap year day included in February and not in any of the other months? What is the official last day of summer in 2015? If one day is not exactly 24 hours and is in fact 23 hours 56 minutes, shouldn't the error add up, and shouldn't we see 12 midnight becoming 12 noon at some point in time? Why does our calendar include leap year? What does it feel like to waste summer? Why is birthday a day to celebrate?