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.


›› Enter dates

Enter two dates below to find the number of days between them. For best results, avoid entering years before 1753. Examples include 2005-09-23 or Aug 2, 1936. You can also type words like today or yesterday, or use the American format, 11/19/2018.

Number of days between:
and  


›› November, 2018 calendar

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  

Today is Monday, November 19th, 2018. It is the 323rd day of the year, and in the 47th week of the year (assuming each week starts on a Sunday). There are 30 days in this month. 2018 is not a leap year, so there are 365 days in this year.


›› Date calculator

number of days in 2018
number of days in 2017
number of days in 2019
number of days in 1993
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
number of days in July
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 October 1st, 1954 and November 19th, 2018
number of days between November 19th, 2018 and July 27th, 2031
number of days between August 18th, 1911 and July 25th, 2029
number of days between April 14th, 1942 and August 28th, 1957
number of days between November 14th, 1946 and December 12th, 1971
number of days between September 26th, 1903 and May 28th, 1916
number of days between July 9th, 1951 and April 2nd, 1965
number of days between August 14th, 1914 and December 11th, 1960
number of days between December 13th, 1943 and January 28th, 1961
number of days between December 21st, 1949 and October 27th, 1961
number of days between August 26th, 1933 and January 4th, 1977
number of days between January 19th, 1910 and June 24th, 1930
number of days between December 17th, 1932 and November 18th, 2025
number of days between March 11th, 1999 and February 3rd, 2036
number of days between October 8th, 1978 and January 21st, 2020
number of days between January 24th, 1910 and April 16th, 1968
number of days between November 24th, 1942 and July 24th, 1945
number of days between June 30th, 1929 and September 5th, 2008
number of days between May 5th, 1902 and December 21st, 1903
number of days between September 4th, 1972 and August 15th, 2035
number of days between December 30th, 1911 and August 18th, 2015
number of days between August 16th, 1928 and October 7th, 1990