# ››How many days in December

There are 31 days in the month of December.

# ››Date difference from Dec 1, 2012 to Jan 1, 2013

The total number of days between Saturday, December 1st, 2012 and Tuesday, January 1st, 2013 is 31 days.

This is equal to 1 month.

This does not include the end date, so it's accurate if you're measuring your age in days, or the total days between the start and end date. But if you want the duration of an event that includes both the starting date and the ending date, then it would actually be 32 days.

If you're counting workdays or weekends, there are 21 weekdays and 10 weekend days.

If you include the end date of Jan 1, 2013 which is a Tuesday, then there would be 22 weekdays and 10 weekend days including both the starting Saturday and the ending Tuesday.

31 days is equal to 4 weeks and 3 days.

The total time span from 2012-12-01 to 2013-01-01 is 744 hours.

This is equivalent to 44,640 minutes.

You can also convert 31 days to 2,678,400 seconds.

# ››December, 2012 calendar

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December 1st, 2012 is a Saturday. It is the 336th day of the year, and in the 48th week of the year (assuming each week starts on a Sunday), or the 4th quarter of the year. There are 31 days in this month. 2012 is a leap year, so there are 366 days in this year. The short form for this date used in the United States is 12/1/2012, and almost everywhere else in the world it's 1/12/2012.

# ››January, 2013 calendar

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January 1st, 2013 is a Tuesday. It is the 1st day of the year, and in the 1st week of the year (assuming each week starts on a Sunday), or the 1st quarter of the year. There are 31 days in this month. 2013 is not a leap year, so there are 365 days in this year. The short form for this date is 1/1/2013.

# ››Enter dates

Enter two dates below to find the number of days between them. For best results, avoid entering years before 1753. Examples include 1931-04-07 or Dec 5, 1981. You can also type words like today or yesterday, or use the American format, 8/18/2017.

Number of days between:
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# ››Date calculator

This site provides an online date calculator to help you find the difference in the number of days between any two calendar dates. Simply enter the start and end date to calculate the duration of any event. You can also use this tool to determine how many days have passed since your birthday, or measure the amount of time until your baby's due date. The calculations use the Gregorian calendar, which was created in 1582 and later adopted in 1752 by Britain and the eastern part of what is now the United States. For best results, use dates after 1752 or verify any data if you are doing genealogy research. Historical calendars have many variations, including the ancient Roman calendar and the Julian calendar. Leap years are used to match the calendar year with the astronomical year. If you're trying to figure out the date that occurs in X days from today, switch to the Days From Now calculator instead.