> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-routing-and-asset-management-information/os-mastermap-highways-network-routing-and-asset-management-information-technical-specification/data-types/timepropertytype.md).

# TimePropertyType

The *timePeriod* attribute on the *DayPropertyType* has a data type of *TimePropertyType*. The following attributes describe how this data type is constructed.

## TimePropertyType attributes

#### **Constraints:**

* A TimePropertyType shall have at least one of timeRange, or namedTime.
* When namedTime = All Day, no other values for namedTime or timeRange shall be populated.

### namedTime

These are named time periods that do not relate to the same time each day.

* **Attribute name:** namedTime
* **Type:** [NamedTimeValue](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-code-lists/namedtimevalue.md)
* **Size:** 17
* **Multiplicity:** \[0..\*]

### timeRange

The range of time which a restriction applies.

* **Attribute name:** timeRange
* **Type:** [TimeRangeType](/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-routing-and-asset-management-information/os-mastermap-highways-network-routing-and-asset-management-information-technical-specification/data-types/timerangetype.md)
* **Multiplicity:** \[0..\*]


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