The moment.js Library

• https://momentjs.com/

   //format a date
   var myMoment = moment(app.getFieldValue("myDateField"));
   console.log(myMoment.format("lll")); //Jul 13, 2020 1:02 PM

• [https://github.com/jsmreese/moment-duration-format/](moment duration format)

   //simple format a duration
   moment.duration(123, "minutes").format(); //2:03:00

   //how old is the value in myDateField
   var myDuration = moment().diff(moment(app.getFieldValue("myDateField")), "seconds");
   moment.duration(myDuration, "seconds").format();