[beagle3]

Easy mnemonic: 60 * 60 * 24 = 864e2 (scientific notation). Take down 2 each time, and shove an e.

[mcosta]

Easier mnemonic: 60 * 60 * 24

The compiler is going to do the operation for you.

[beagle3]

Of course. I use 864e2 to remember that it is 86400 when I do calculations on paper.