moment().duration().hours();

npm install moment

const moment = require('moment'); 
  
let durationOne = moment.duration(20, 'hours'); 
let durationTwo = moment.duration(28, 'hours'); 
  
// This returns 20 as the number of 
// hours is less than a whole day 
console.log( 
    "durationOne hours is:", durationOne.hours() 
) 
  
// This returns 4 as the number of hours 
// is greater than a whole day (24 hours), 
// and therefore returns the value of hours 
// of the next day (next 4 hours) 
console.log( 
    "durationTwo hours is:", durationTwo.hours() 
)

durationOne hours is: 20
durationTwo hours is: 4

let durationA = moment.duration(50, 'hours'); 
let durationB = moment.duration(64, 'hours'); 
  
// The asHours() method will return the 
// length of the duration in hours 
console.log( 
    "Length of durationA in hours is:", durationA.asHours() 
) 
  
// The hours() method will return the hour of the duration 
console.log("durationA hours is:", durationA.hours()) 
  
console.log( 
    "Length of durationB in hours is:", durationB.asHours( 
)) 
console.log("durationB hours is:", durationB.hours())

Length of durationA in hours is: 50
durationA hours is: 2
Length of durationB in hours is: 64
durationB hours is: 16