Anniversary
100th day, 1000th day milestones
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About this tool
Enter a start date such as a dating anniversary or wedding date, and this tool shows what day you are on today plus the dates of major milestones like the 100th and 200th day and yearly anniversaries. The start date counts as day 1, following the common Korean-style counting convention.
How to use
- Enter the start date (dating anniversary, wedding date, etc.).
- See what day today is right away.
- Check the list below for each milestone from day 50 up to the 10th anniversary, with its date and D-day.
- Milestones that have already passed are shown dimmed.
Frequently asked questions
- Is day 100 counted from the start date or the day after?
- The start date itself counts as day 1. For example, if a couple started dating on January 1, day 100 falls on April 9 - 99 days after January 1.
- Is the 1st anniversary the same as day 365?
- Yes. In this calculator the 1st anniversary equals day 365, the 2nd equals day 730, the 3rd equals day 1095, and the 10th equals day 3650.
- How far ahead does the milestone list go?
- It lists day 50, 100, 200, 300, the 1st anniversary (365), day 500, the 2nd anniversary (730), day 1000, the 3rd anniversary (1095), day 2000, and the 10th anniversary (3650).
- Can this be used for a wedding anniversary too?
- Yes. Enter a wedding date or any other reference date as the start date and the tool calculates the day count and every milestone date the same way.
The start date is counted as day 1 (Korean-style counting). The date you enter is never sent to a server.