Add the specified number of hours to this datetime.
Add the specified number of hours to the value of this object, adjusting the "date" part of the object accordingly. Return a reference providing modifiable access to this object. If 24 == hour() on entry, set the hour attribute to 0 before performing the addition. The behavior is undefined unless the resulting value is in the valid range for a Datetime object. Note that hours may be positive, negative, or 0.
reference to this object
| Name | Description |
|---|---|
| hours | number of hours to add (may be negative) |