If you need to calculate dates in your spreadsheets, Excel uses its own unique system, which it calls Serial Numbers. Every date (month, day, year) and time (hour, minute, and second) has an ...

Serial numbers in zone files help your DNS service determine whether it should re-ingest your zone files or ignore them. But there’s more to these pseudo timestamps than meets the eye. In fact, the ...

I lost my MacBook Pro today. I went to the police to file a stolen item report, and they say that without the serial number, there's not much they can do to help, since even if they found the guy who ...

Pull any bill out of your wallet. See the dark green numbers on the top-left and top-right corners? Those are serial numbers, and some are more rare than others. If you happen to have paper money with ...

You've probably never given a second thought to the dollar bills sitting in your wallet right now. Most people don't. They're just money, right? Something to grab for coffee or parking meters, and ...

Let’s say you buy a pre-owned or vintage watch and want some more information on when it was made, what it might be worth, etc. The watch’s serial number can, in many cases, help you track down this ...