- Racing laps table
This is generator of lap running order for kart racing. The goal is to let each racer to try each starting position/kart in random order.

- Sun position at a given date. Azimuth and elevation table.
Calculation of azimuth and elevation of the sun above the horizon for a given position and time. Table with one hour increments.

- Sunrise and sunset calculator
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 basal metabolic rate
This calculator computes BMR calories

- The Muslim calendar. The Gregorian calendar conversion
The Muslim calendar. The Gregorian calendar conversion

- Time difference between the cities
Calculates the time difference between the two cities based on the catalogue data.

- Time Span Calculator
This online calculator computes how much time is passed between two time points, specified in hours and minutes.

- Time zones
The calculator shows the current time, universal time, and time for the selected city

- Time. Total sum
Calculator sums up input time intervals

- Total time
- Total time
This calculator allows you to carry out the addition of the time - it displays the total, the average, minimum and maximum.

- Tournament table
The calculator performs the participant placement with two following conditions: 1) Each participant must start from each starting position. 2) Each participant must encounter every other participant.

- Travel Duration
This online calculator computes travel duration given departure time and city and arrival time and city using time zones information

- Use of Time Summary
This calculator summarizes time for different activities entered into table

- Week number of a given date
Week number of a given date. Europe (ISO 8601) standard method, US method and simple numeration method.

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