Originally Posted by SEMIJim
I've even still got my old HP 15C calculator. (Good ol' RPN. Can't beat it
) Batteries are dead, but that should be no problem.
Old calculator, eh? I've got one of these:
I was able to get the almanac to work until just three weeks ago. It's still a great astro calculator, and it must have been a huge time saver 25 years ago.