Hello Ioanus,

I>>You people are unbelievable! Especially Melanie (with the hidden preference in leather is suspect...!).

Well to answer the mans problem (!) may be a table in a external EEPROM would be more quick to retrive the data than calculate them?<<

Could you upload the exact formulas for your idea?
I just may get a wild hair, and make a program on the chip for this.

The reason why, is because I used to do a LOT of satellite communications from both low orbit and Geo-stationary Sats. Ran many different modes of communication through them. And in order to communicate with Low orbit Sats, you had to use a program to see if it is in "Line of Sight" for communication. The same principal can is being used in your religious prayer time.

Dwayne