Old Russian calendar - years since world creation
Calculation of azimuth and elevation of the sun above the horizon for a given position and time. Table with one hour increments.
Sunrise/Sunset calculation for given latitude and longitude or for given city. Source: Almanac for Computers, 1990 published by Nautical Almanac Office United States Naval Observatory Washington, DC 20392
The Muslim calendar. The Gregorian calendar conversion
Calculates the time difference between the two cities based on the catalogue data.
Calculate time interval between two dates
This online calculator computes how much time is passed between two time points, specified in hours and minutes.
The calculator shows the current time, universal time, and time for the selected city
Calculator sums up input time intervals
This calculator allows you to carry out the addition of the time - it displays the total, the average, minimum and maximum.
This online calculator computes travel duration given departure time and city and arrival time and city using time zones information
This calculator summarizes time for different activities entered into table
Week number of a given date. Europe (ISO 8601) standard method, US method and simple numeration method.