DateTimeInterface::format - Manual

Time values stored in string or numeric format can be converted into a date format

Select the cells you want to format Press CTRL+1 In the Format Cells box, click the Number tab In the Category list, click Date, and then choose a date

date a live Numeric date formats Format name and description, Examples epoch_millis The number of milliseconds since the epoch Minimum is -

date a live DateFormat is an option that determines the date formatting of dates