|Number of days in a year|
|Julian days calculation|
Calculation of the Julian day for a given date, plus some information.
|Julian and Gregorian calendars|
Julian and Gregorian calendars date conversion
|Old Russian (Byzantine) system of chronology|
Old Russian calendar - Years are counted since the creation of the world
Moon's age and phase calculation
|The Muslim calendar. The Gregorian calendar conversion|
The Muslim calendar. The Gregorian calendar conversion
|Mayan calendar, 2012, the end of the world.|
About 2012, the end of the world and Maya
|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.
|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.
|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.
|Week number of a given date|
Week number of a given date. Europe (ISO 8601) standard method, US method and simple numeration method.
|Orthodox Easter date calculator|
Using a modification of the Gauss algorithm to calculate Orthodox Easter date
|Area de la Sombra de un Objeto|
El área de la sombra se refiere a la de un objeto cuadrado o rectangular.
This online calculator determines the amount of time that has elapsed between a specific date and the current moment.
|Date by the Julian Day Number|
Displays Gregorian calendar date corresponding to Julian Day Number
|Gregorian calendar. Julian calendar. The calendar eras.|
The calculator converts Julian calendar date to Gregorian calendar date taking in account the calendar era.
|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.
|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.
|Week days calculator|
The calculator counts the number of week days between two selected dates.