Change the date format in Excel — dd/mm/yyyy, 29 Sep 2026, day names — with Ctrl+1 and custom codes, and fix dates that refuse to change because they are text.
Make a monthly calendar in Excel that rebuilds itself when you change the month: one date cell, one formula, conditional formatting for today.
Get the day of the week in Excel: WEEKDAY for a number, TEXT for the name, flag weekends, and count working days with NETWORKDAYS.
Get the month from a date in Excel as a number with MONTH, as a name with TEXT, and group a whole column by month for totals.
Count days between two dates in Excel by subtracting them, count only working days with NETWORKDAYS, and fix the result that shows as a date.
Excel DATEDIF explained: the hidden function that gives full years, months or days between two dates — ages, service length, contract terms.
The Excel TODAY function: insert a date that updates every day, count days until a deadline, and the shortcut for a date that never changes.
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