[amsat-bb] Manual Tracking ISS pass times

For those who dont keep an up-to-date ISS tracking program always handy, I find it easy to remember that in general ISS passes are about 23 minutes later each day, but overall ,moving Earlier by 51 minutes every other day. See the plot about 40% down this page:

http://aprs.org/MobileLEOtracking.html

Nice to remember when you dont have access to heavens-above.com Again the actual orbit is moving earlier each day, but almost repeats every other day.

Bob