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.

**Note:** If you're trying to figure out the date that
occurs in X days from today, switch to the **Days From Now calculator**
instead. Or to calculate the date that is X days from a particular date,
use the **Days From Date calculator**.
Finally, if you want to choose a day in the week and count how many
times it occurs in a given year, try out the **How Many Days calculator**.

Su | M | Tu | W | Th | F | Sa |

1 | 2 | 3 | ||||

4 | 5 | 6 | 7 | 8 | 9 | 10 |

11 | 12 | 13 | 14 | 15 | 16 | 17 |

18 | 19 | 20 | 21 | 22 | 23 | 24 |

25 | 26 | 27 | 28 | 29 | 30 | 31 |

Today is Saturday, December 3rd, 2016. It is the 338th day of the year, and in the 48th week of the year (assuming each week starts on a Sunday). There are 31 days in this month. 2016 is a leap year, so there are 366 days in this year.

number of days in 2016

number of days in 2015

number of days in 2017

number of days in 2029

number of days in January

number of days in February

number of days in March

number of days in April

number of days in May

number of days in June

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number of days in August

number of days in September

number of days in October

number of days in November

number of days in December

number of days between July 11th, 1964 and December 3rd, 2016

number of days between December 3rd, 2016 and July 30th, 2031

number of days between June 3rd, 1921 and April 1st, 1993

number of days between May 11th, 1920 and June 11th, 1960

number of days between August 25th, 1915 and March 9th, 1950

number of days between May 18th, 1906 and April 19th, 1910

number of days between June 16th, 1906 and March 14th, 1914

number of days between October 13th, 1965 and June 30th, 2017

number of days between September 16th, 1903 and August 28th, 1905

number of days between September 13th, 1926 and April 9th, 1939

number of days between February 18th, 1929 and September 15th, 1975

number of days between April 10th, 2006 and July 14th, 2017

number of days between August 2nd, 1907 and October 22nd, 1908

number of days between May 18th, 1914 and March 29th, 1995

number of days between September 22nd, 1915 and October 7th, 1966

number of days between February 20th, 1953 and September 25th, 1955

number of days between November 4th, 1920 and January 24th, 1922

number of days between November 10th, 1973 and October 19th, 1989

number of days between July 8th, 1903 and September 26th, 1922

number of days between February 25th, 1911 and February 6th, 1920

number of days between June 20th, 1911 and November 4th, 1950

number of days between March 29th, 1904 and January 21st, 1907

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