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百日与纪念日计算
输入起始日期，即可得到第 100、200、300 天、一周年、第 500 天和第 1000 天的日期。
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How to use it
1Step 1Fill in Start date
2Step 2Change a value and the result updates instantly
3Step 3Save or copy the result with Calculate
If the result looks off
The result looks wrong
Check the units and the baseline first. Changing a value updates the result instantly.
I want the starting values back
Press reset to return to the initial state.
常见问题
Is the start day counted?
Yes — the start date counts as day one, the usual way anniversaries are counted.
Can I use it for a work anniversary?
Yes, any start date works — a job, a move, a first meeting.