| arrival | Indicates that the date(s) found in the date time span group attributes apply to the arrival date(s) for which this offer applies. |
| booking | Indicates that the dates found in the date time span group attributes apply to the booking dates for which this offer applies. |
| departure | Indicates that the date(s) found in the date time span group attributes apply to the departure date(s) for which this offer applies. |
| stay | Indicates that the dates found in the date time span group attributes apply to the stay dates for which this offer applies. |