Excel’s Date & Time functions ease the workload for bookkeepers, project planners, HR departments, and other jobs where time is money. The four functions covered here—ISOWEEKNUM, WEEKNUM, WORKDAY, ...

As you create Excel spreadsheets for your small business, time and date functions frequently add both convenience and programming capability to your workbooks. There's good news with date functions.

Last week I explained how Excel uses its own, unique system of serial numbers to calculate dates and times. That piece covered nine Date & Time functions: NETWORKDAYS(), DATEVALUE(), NOW(), DAY(), ...

Excel already knows when the month ends.