To me 86400 is just as valid as 60 * 60 * 24. It's a useful constant and should be known. I was able to spot the error easily. The best way to fix errors like

To me 86400 is just as valid as 60 * 60 * 24. It's a useful constant and should be known. I was able to spot the error easily. The best way to fix errors like this is to delegate it to a library.