WinDate Calculator is a flexible utility program that allows you to quickly perform date calculations without having to manually thumb thru a calendar. It can work with any dates between September 14, 1752 (the official beginning of the English Gregorian calendar) and December 31, 3999. If you need help determining how many days/weeks/months/years are between two dates, what date is plus or minus any number of days/weeks/months/years from another date, what day of the week a certain date falls on, or just need a handy calendar reference, WinDate Calculator is your tool of choice. Features include the ability to define count criteria, mark recurring holidays, perform calculations by days/weeks/months/years, print calculation results, copy/paste dates in a variety of formats, and optionally sit in the Windows system tray. Site/volume licensing is available. This version is fully functional & can be used for a 30-day trial period.
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 calculate for example rises. This utility offers a fast and easyway to convert a gregorian date information to a julian day format or modified julian day format. The Modified Julian Day (MJD), introduced by the Smithsonian Astrophysical Observatory in 1957 to record the orbit of Sputnik, is defined in terms of the Julian day. It count the days since the 17th november 1858. It defines from the JD value as follow MJD =JD-2400000
Does date arithmetic (adds a number of days to a date and calculates the number of days between two dates) and converts among Gregorian dates, Julian dates, Annus Novus dates, Julian day numbers and day-in-year dates of the form yyyyddd. Designed for easy performance of date calculations. Program is trilingual: English, German and Spanish.