SkyMate Pro: The Navigator's Almanac is a computerized Nautical Almanac. Using an internal almanac for the years 1900-2100, SkyMate Pro will provide Mariners the accurate information needed for celestial navigation at sea. To maximize the full potential of SkyMate Pro, the user should have a working knowledge and proficiency in the terminology and skills of celestial navigation. SkyMate Pro uses date/time information entered into a DR Toolbar to calculate a number of various almanac functions. The flexibility of the DR Toolbar allows the user to quickly change date/time and position information for the various celestial functions available. Although features are available to project a DR position to various times and dates, the program does not require you to maintain a DR position in order to calculate the various celestial functions.