Docly Developers
Function Updated 19 Oct 2026

addHours(datetime, hours)

Adding a number of hours (positive or negative value) to a specified date.

See also Compare date field with todays date Get todays date SetCulture date and number format

Parameters

datetimedatetimerequired

Datetime on which to add hours to.

hoursnumberrequired

How many hours to add to specified datetime.

Returns

A modified date, does not modify input date.

Example

Mixed HTML (or any text file) with inline JavaScript between hash signs.
#{
    var dt = new Date(); // Create new date and time object
    
    write("Before: ");
    write(format(dt, "HH:mm")); // output time
    
    dt = docly.addHours(dt, 3.5); // Add 3.5 hours
    write(" After: ");
    write(format(dt, "HH:mm")); // output time
}#