Reference FQL API reference Time subtract() time.subtract() Subtract a time interval from a Time. Signature subtract(amount: Number, unit: String) => Time Description Subtract a time interval from Time. Parameters Parameter Type Required Description amount Number true Count of number of units. unit String true Time units: nanoseconds microseconds milliseconds seconds minutes hours days Return value Type Description Time Resulting time, rounded to the nearest nanosecond. Examples Time('2099-02-10T12:00:00.000Z').add(19, 'minutes') Time("2099-02-10T12:19:00Z") difference() toMicros()