Hello fellow satellite watchers! I have certainly learned alot by subscribing to this list the past year or more. Now I've run into a problem that I'm confident someone here will be able to answer. I've always used Quicksat (V2.10D) to make a list for evening observing but as of a month ago I've been getting the following error when I try to run it: Invalid Month Number: 0 Now I've tried moving the month number, ie. "6" for June to various positions on first line of the Quicksat.ctl file but continue to get the same error. I've even added a "0" in front of "6" but to no avail. Does someone know how I can correct this? Thank you VERY MUCH for your help! Bob King