Group consecutive dates and total covered days
Organize scattered attendance, usage or reservation dates into intervals to check actual coverage.
It is only processed in the browser, not uploading or saving. Leaving the page will be cleared; the calculation can also be cleared and the result can be discarded. Do not enter other people's credentials or private keys.
Group consecutive dates and total covered days User manual
- Fill in the parameters or select the file according to the form, and check the unit and format first.
- 2026-12-30, 2026-12-31 and 2027-01-01 form one three-day interval.
- Click the processing button to view the results, you can copy or download and save.
Calculation method and processing rules
Remove duplicates and group by Gregorian calendar days, counting both ends. UTC comparisons avoid daylight-saving errors.
scope of use
Full dates in years 1000 to 9999 only, up to 1000 lines. Missing dates are not filled in and workdays are not classified.
Will the input content be saved on the server?
This tool handles input in the browser, and does not upload files or form content. Typing practice scores are only saved in the native browser.
Why may the result be different from other tools?
Full dates in years 1000 to 9999 only, up to 1000 lines. Missing dates are not filled in and workdays are not classified. Please compare the input unit, rounding method, applicable rules and data version first.