How D-day labels work
- Before the date it shows D- plus the days left, on the day D-DAY, and afterwards D+ plus the days since.
- Example: from November 3, 2026, January 1, 2027 is D-59.
- Dates use your device’s calendar, so abroad it counts in local time.
Counting 100 days the Korean way
Koreans often celebrate the 100th day of a relationship or of a baby’s life. They usually count the start date as day 1, so day 100 is 99 days after the start.
Example: counting November 3, 2026 as day 1, day 100 is February 10, 2027.
Common uses
- Exam and test countdowns
- Couple anniversaries, a baby’s 100th day and first birthday
- Military discharge, departure dates, contract end dates
FAQ
Is today D-0?
It is usually written D-DAY. The day before is D-1.
Do I include the start date for 100 days?
For couples and a baby’s 100th day, Koreans usually count the start date (or birthday) as day 1. Keep “Count the start date as day 1” on.
Are leap years handled?
Yes. It uses real calendar dates, including February 29.
For reference only. Actual amounts and decisions depend on your contract, your workplace and how the authorities apply the rules.