How many days until a date?
Quick answer
Use today at the start of the local calendar day and compare it with the target date. For a date-only countdown, an exact event time is not necessary.
Useful for more than birthdays
The same calculation works for holidays, launches, deadlines, trips, anniversaries and any other calendar target.
Why EgoTools separates exact maths from estimates
Exact date calculations use calendar arithmetic. Estimates are labelled as estimates, and entertainment results are labelled as entertainment rather than presented as scientific population facts.