El área de la sombra se refiere a la de un objeto cuadrado o rectangular.
Calculator calculates the date of the initial date and the number of working days. Taking into account weekends, holidays and weekend shifts at work days, according to the published decrees of the government of the Russian Federation. Created by user's request.
Julian and Gregorian calendars date conversion
Calculation of Julian day for given date plus some information about it
About 2012, the end of the world and Maya
Moon's age and phase calculation
Calculator calculates the number of days between the two entered dates. Taking into account weekends, holidays and weekend shifts to work days, according to the published decrees of the government of the Russian Federation.
Old Russian calendar - years since world creation
Using a modification of the Gauss algorithm to calculate Orthodox Easter date
The Muslim calendar. The Gregorian calendar conversion
Week number of a given date. Europe (ISO 8601) standard method, US method and simple numeration method.