2011 Nautical Almanac 2011 Overview

Educational orbit and gravitation simulator for high school, college and beginning university physics and astronomy. Easily create, run, print and save a simulation. Includes 29 premade simulations with activities page in html-format.

Complete 2011 Nautical Almanac in pdf format. Includes monthly star charts with the planet's positions.

Complete 2014 Nautical Almanac in pdf format complete with monthly star charts. Includes Parallax corrections for the planets which are not normally available.