Reference FQL API reference Time difference() time.difference() Get the difference between two Times. Signature difference(start: Time, unit: String) => Number Description Get the difference between two times. Parameters Parameter Type Required Description start Time true Time to subtract from instance Time. unit String true Time units: nanoseconds microseconds milliseconds seconds minutes hours days Return value Type Description Number Difference between the provided times, in units rounded to the nearest nanosecond. Examples Time('2099-02-10T12:00:00.000Z').difference(Time('2099-02-01T12:00:00.000Z'), 'days') 9 add() subtract()