Most helpful positive review
20 of 20 people found the following review helpful
Michelsen's calculations are accurate and easy to use!
on May 23, 1999
I have used Michelsen's Ephemerii for 20 years. They are accurate, and easy to use. Even in this age of computer charting, it's very handy to track the progress of the planets day-to-day or month-to-month.