Hi All, I wanted to see if it were conceivable to create a spreadsheet you could calculate the position of planets within our solar system given a lat and long position and using the current time? I've tried searching for something similar, or formulas to calculate these, but haven't had much luck. perhaps I'm just not looking for the right thing. I eventually want to be able to create something in php, but figured getting it in Excel to start with may be a better way of approaching it. Any help or suggestions would be hugely appreciated.