const then = new Date('2022-01-24T09:30:20'); const now = new Date(); const msBetweenDates = Math.abs(then.getTime() - now.getTime()); // 👇️ convert ms to hours min sec ms const hoursBetweenDates = msBetweenDates / (60 * 60 * 1000); console.log(hoursBetweenDates); if (hoursBetweenDates < 24) { console.log('date is within 24 hours'); } else { console.log('date is NOT within 24 hours'); }