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πΉ Play
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π DATES
Date Calculator
Days between dates, add/subtract days, age calculator, event countdowns β all in one place.
π Days Between
β Add / Subtract
π Age Calculator
β³ Countdown
Start Date
End Date
Set Start = Today
Set End = Today
Calculate
0
days apart
Start Date
Days to Add (+) or Subtract (β)
Calculate
resulting date
Date of Birth
Calculate Age As Of
Calculate Age
years old
Event Name
Event Date
Start Countdown
days to go
Quick Facts
1 year
= 365 or 366 days (leap years)
1 month
= 28β31 days depending on month
1 week
= 7 days exactly
Leap year rule
= divisible by 4, except centuries unless divisible by 400
Business days
= weekdays only (MonβFri)
Unix epoch
= January 1, 1970