These are supposed to be able to calculate the sunrise and sunset on any given day.

Might be useful for hunting...

this is for the U.S.:

http://aa.usno.navy.mil/data/docs/RS_OneDay.html

This is for Canada:

http://www.hia-iha.nrc-cnrc.gc.ca/sunrise_e.html

............................. or fishing.

Yepper..for sure!

I do it the easy way. My Magellen Sport Trak GPS tells me sunrise and sunset, moonrise and moonset. I can even tell you when hight tide is going to happen in Oklahoma.

LOL...that's definitely a lot cooler!

I use my GPS also. The sunrise-sunset tables come in handy because we are allowed to hunt a half hour before sunrise and a half hour after sunset. Keeps me from getting a ticket.

The moon phase is handy for knowing game movement.

Well, living here in Oklahoma, I would sure enough be interested in that.... So, if you don't mind, please give me a heads-up before "the next big one" hits.....LOLOL