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DateDifference

DateDifference[date1, date2]
gives the number of days from date1 to date2.
DateDifference[date1, date2, "unit"]
gives the difference between date1 and date2 in the specified unit.
DateDifference[date1, date2, {"unit1", "unit2", ...}]
gives the difference as a list with elements corresponding to the successive "uniti".
  • Dates can be specified in the following forms:
{y,m,d}year, month, day
{y,m}the first day of the specified month
{y}January 1 of the year y
"string"date as a string ("Jan. 1, 2000")
{y,m,d,h,m,s}precise time
timeabsolute time specification
  • Possible units are "Year", "Quarter", "Month", "Week", "Day", "Hour", "Minute", "Second".
  • {y, m, d} is taken to be equivalent to {y, m, d, 0, 0, 0}, etc.
  • DateDifference[date2] gives the fractional number of days from the current time until date2.
Give the number of days between January 1 and July 4:
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Use dates specified in {y, m, d} form:
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Find a date difference in units of weeks:
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If the second date is before the first, the date difference is negative:
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