Reference FQL API reference Date subtract() date.subtract() Subtract number of days from a Date. Signature subtract(amount: Number, unit: String) => Date Description Subtracts a provided number of days from a Date. Parameters Parameter Type Required Description amount Number true Number of units to subtract from the given date. unit Number true Unit for the operation. Must be days (case-sensitive). Return value Type Description Date Resulting date Examples Date('2099-02-10').subtract(41, 'days') Date("2098-12-31") difference() toString()