Winday is a fast, small calendar program developed for use in Windows
95/98/ME/NT/2000. In a single screen, this program gives the current
(system) date and time, and some information of interest for that day,
such as that encountered in an almanac. The information given (besides
time and date) includes: anniversaries, moon phase, sunrise and sunset;
if applicable for that day, religious observances, astronomical events
and special messages are indicated. A thought for the day is also
given. The user can also move to other dates, and see, for example,
future occurrences.

• World Almanac 4.2.0
  The World Almanac displays solar and lunar data for every 30 minutes throughout the day in addition to the times of rise, set and twilight as well as the lunar phase. Many...

• AstroNav 1.1.6
  Using the same standards of accuracy as published tables but with a catalogue extending beyond Barnard's Star; it can be used as a sight calculator, a definative astronomical reference or simply to print daily Nautical Almanac pages

• Julian Day Converter 1.0
  This utility can convert a gregorian date into julian day format/Modified Julian Day format and vice versa. The Julian Day Format counts the day since the 24th november -4713bc. The julian day format is often used in the astronomical section to...

• Chinese Calendrics 12.09
  The Chinese Lunar Calendar is a lunisolar calendar, consisting of months corresponding exactly to lunar cycles and years which stay more-or-less in sync with seasonal years