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Days until Christmas
Countdown to December 25th.
Days until New Year's
Countdown to January 1st.
Days until Halloween
Countdown to October 31st.
Days until Thanksgiving
Countdown to the 4th Thursday in November.
Days until Valentine's Day
Countdown to February 14th.
Days until Easter
Countdown to Easter Sunday.
Days until 4th of July
Countdown to Independence Day.
Days until Memorial Day
Countdown to the last Monday in May.
Days until Labor Day
Countdown to the first Monday in September.
Days until Mother's Day
Countdown to the 2nd Sunday in May.
Seconds in a day
How many seconds are in 24 hours.
Seconds in a year
Total seconds in a common year vs leap year.
Weeks in a year
How many weeks fit in a year.
Days in a year
365 days in common years, 366 in leap years.
Days between dates
Calculate the number of days between two dates.
Weeks between dates
Calculate the number of weeks between two dates.
Months between dates
Calculate the number of months between two dates.
Business days between dates
Weekends excluded; simple business-day count.
Weekend days between dates
Count only Saturdays and Sundays between two dates.
Days until a date
How many days, weeks, or hours until a date.
Days since a date
How many days since a past date.
Age in seconds
See your age in seconds, live.
Age in days
See your age in days.
Leap year checker
Check if a year is a leap year and see days and seconds.
Percent of year complete
How much of this year has passed.
Percent of month complete
How much of this month has passed.
Days left in the year
How many days remain in the current year.
Weeks left in the year
How many weeks remain in the current year.
Sundays in a year
How many Sundays are there in a given year.
Mondays in a year
How many Mondays are there in a given year.
Tuesdays in a year
How many Tuesdays are there in a given year.
Wednesdays in a year
How many Wednesdays are there in a given year.
Thursdays in a year
How many Thursdays are there in a given year.
Fridays in a year
How many Fridays are there in a given year.
Saturdays in a year
How many Saturdays are there in a given year.
Work days and hours in a year
Estimate working days and hours with weekends, PTO, and holidays.
Week number for a date
Find the ISO week number for any date.
Days until end of year
Days left until Dec 31.
Weeks until end of year
Weeks left until Dec 31.