I just tryed it out by using google earth to find my house and pulling the lat/long from that. I was going to add the comment about altitude too...but somebody else already considered that. Interested in altitude ranges from Death Valley to Everest. Then If I time it and notice a difference, I know what difference my local terrian makes - even more useful information. Nifty little widget, become like Caine from Kung-Fu and watch the sun rise every morning. It is time for me me to go, you pebble snatcher!

Michel, from Tours: Disregard my last entry which was based on information gleaned from the web. The variation in sunrise/sunset times with altitude depends on a number of factors including latitude. At an altitude of 1000m, you see about 1 degree further, which at the equator would make a change of 4 minutes to sunset and sunrise times. At 51 30 N (London), it currently gives a change of nearly 7 minutes. At the summit of Everest, the change would be 3 degrees, and at the summit of the Matterho…rn about 2 degrees.

At altitudes below 1000m, the characteristics of the local terrain would be likely to make more difference than the altitude alone. What range of altitudes are you interested in? More

The adjustment you need is less than 1 minute in time per 1500m in height. That's about 6 minutes on the summit of Everest, 3 minutes on the Matterhorn and insignificant for most of us who are earthbound.

There's a third parameter, missing: local altitude. Otherwise, one of those widgets I like to have around. Nice.

I've just tested it with Latitude:53 32 57 N and Longitude:9 59 31 E for today 2006/02/16 and it gives 06:37:42/16:31:42 UTC times. If you set Timezone Offset = 1 (hour) it says 07:37:42/17:31:42. In what way is that not working?
Note that it requires E/W and N/S (not O).