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Age
Calculate your age with minute precision
Area de la Sombra de un Objeto
El área de la sombra se refiere a la de un objeto cuadrado o rectangular.
Date and number of working days (for Russia)
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.
Days between dates. The historical version.
Calculates number of days between two dates taking in account the date of transition to Gregorian calendar.
Days count in several date spans
The calculator gives total number of days in date span list. Each date span is defined by start date and end date. The calculator can exclude multiple date date span intersections.

Displays Gregorian calendar date corresponding to Julian Day Number

Julian Day Number

Gregorian calendar. Julian calendar. The calendar eras.
The calculator convers julian calendar date to gregorian calendar date taking in account the calendar era.
How many workdays between two dates?
The calculator evaluates number of working days and holidays for a period of time. The calculator based on the U.S. federal holidays table recognised in most states.
Julian and Gregorian calendars
Julian and Gregorian calendars date conversion
Julian Day
Calculation of Julian day for given date plus some information about it
Mayan calendar, 2012, the end of the world.
About 2012, the end of the world and Maya
Moonphases
Moon's age and phase calculation

Using a modification of the Gauss algorithm to calculate Orthodox Easter date

Year

Number of days in a year
Number of working days between two dates (for Russia)
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 (Byzantine) system of chronology
Old Russian calendar - years since world creation
Russian non-working days
The calculator displays official day offs for the current year and the weekends adjacent to them. The calculator takes into account weekends shifts according to Russian Federation Government Decrees.
The Muslim calendar. The Gregorian calendar conversion
The Muslim calendar. The Gregorian calendar conversion
Week number of a given date
Week number of a given date. Europe (ISO 8601) standard method, US method and simple numeration method.