RunKit + npm: rrule

var rrule = require("rrule") var rrulestr = rrule.rrulestr console.log(rrulestr('FREQ=DAILY;DTSTART=20180416T070000Z;INTERVAL=2;WKST=MO').between(new Date("2018-10-24T22:00:00.000Z"), new Date("2018-11-03T00:00:00.000Z")))