function subtractHoursFromDate(hours, date = new Date()) {
date.setHours(date.getHours() - hours);
return date;
}
const date = new Date('2022-03-20T18:37:24');
console.log(subtractHoursFromDate(5, date).toString());
/*
run:
Sun Mar 20 2022 13:37:24 GMT+0000 (Coordinated Universal Time)
*/