日期加減

使用步驟

Add or subtract whole days from a calendar date in this tab. Nothing is uploaded.

1. Open Add days to a date

   Today and +30 days are already filled. The new date sits on the right.

2. Change the date or the day count

   Negative days go backwards. Leap days are included.

3. Copy the new date

   Copy puts YYYY-MM-DD on the clipboard.