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’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, ...
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