From the archive
Wednesday, 23 September 2026
EOMONTH rounds a date stepped forward by whole months onto the last day of wherever it lands, in the same move — and DATEDIF's "M" unit turns two dates into a whole number of months instead of a span of days nobody asked for.
You handle renewals for the IT department's software maintenance contracts. To keep invoicing simple, every contract is set to renew on the last day of a month rather than on the exact anniversary of its start date. For each contract below, use EOMONTH in column D to step the start date in column B forward by its term length in column C and land on that month's last day — the renewal date. Then, measuring from today's review date of September 23, 2026, use DATEDIF in column E to work out how many whole months remain until each renewal.
A new exercise every morning, plus every day that came before it — a back catalogue that grows by one a day, whether or not you were here for it.
The last 14 days. Today's challenge is free while your streak is alive; Pro opens every past day too.