cesium
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CesiumJS is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin.
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JavaScript
/**
* Constants for time conversions like those done by {@link JulianDate}.
*
* @exports TimeConstants
*
* @see JulianDate
*
* @private
*/
var TimeConstants = {
/**
* The number of seconds in one millisecond: <code>0.001</code>
* @type {Number}
* @constant
*/
SECONDS_PER_MILLISECOND : 0.001,
/**
* The number of seconds in one minute: <code>60</code>.
* @type {Number}
* @constant
*/
SECONDS_PER_MINUTE : 60.0,
/**
* The number of minutes in one hour: <code>60</code>.
* @type {Number}
* @constant
*/
MINUTES_PER_HOUR : 60.0,
/**
* The number of hours in one day: <code>24</code>.
* @type {Number}
* @constant
*/
HOURS_PER_DAY : 24.0,
/**
* The number of seconds in one hour: <code>3600</code>.
* @type {Number}
* @constant
*/
SECONDS_PER_HOUR : 3600.0,
/**
* The number of minutes in one day: <code>1440</code>.
* @type {Number}
* @constant
*/
MINUTES_PER_DAY : 1440.0,
/**
* The number of seconds in one day, ignoring leap seconds: <code>86400</code>.
* @type {Number}
* @constant
*/
SECONDS_PER_DAY : 86400.0,
/**
* The number of days in one Julian century: <code>36525</code>.
* @type {Number}
* @constant
*/
DAYS_PER_JULIAN_CENTURY : 36525.0,
/**
* One trillionth of a second.
* @type {Number}
* @constant
*/
PICOSECOND : 0.000000001,
/**
* The number of days to subtract from a Julian date to determine the
* modified Julian date, which gives the number of days since midnight
* on November 17, 1858.
* @type {Number}
* @constant
*/
MODIFIED_JULIAN_DATE_DIFFERENCE : 2400000.5
};
export default Object.freeze(TimeConstants);