The date of an Excel serial number (local time); serial 60 (Excel's 1900-02-29) becomes 1900-03-01.
the serial number
the date
serialToDate(46311); // 2026-10-16 00:00 local Copy
serialToDate(46311); // 2026-10-16 00:00 local
1.1.99
The date of an Excel serial number (local time); serial 60 (Excel's 1900-02-29) becomes 1900-03-01.