Datetime Attribute Type
The Datetime Attribute Type is a data type defined by XHTML Modularisation 1.1, declared in the DTD as XML 1.0 type CDATA.
Reference: *W3C - XHTML Modularisation 1.1 - Attribute Types
- Specific Attributes with Type Datetime
- Common Attributes with Type Datetime
- Attribute Value for Type Datetime
Specific Attributes with Type Datetime
Common Attributes with Type Datetime
There are no Common Attributes with type Datetime.
Attribute Value for Type Datetime
Date and Time in the W3C profile of the ISO 8601 date format (YYYY-MM-DDThh:mm:ssTZD), e.g. "2006-01-31T13:52:10-05:00", "2006-05-28T21:01:26Z"
In the ISO 8601 date format (YYYY-MM-DDThh:mm:ssTZD), TZD is a time zone designator, with Z indicating UTC, +hh:mm indicating a zone hh:mm ahead of UTC and -hh:mm a time zone hh:mm behind UTC. (UTC is almost identical to GMT, and for the purposes of the web the two can almost invariably be considered equivalent.)
If less precision is required, the following formats are also valid:
- YYYY
- YYYY-MM
- YYYY-MM-DD
- YYYY-MM-DDThh:mmTZD
Less commonly, a more precise form (including a decimal fraction of a second) may be used: YYYY-MM-DDThh:mm:ss.sTZD
See *the W3C note on datetime formats for more information. Common TZD values are listed in the table below.
| Time Zone | TZD |
|---|---|
| Greenwich Mean Time, GMT | Z |
| British Summer Time, BST | +01:00 |
| Newfoundland Standard Time, NST | -03:30 |
| Newfoundland Daylight Time, NDT | -02:30 |
| Atlantic Standard Time, AST | -04:00 |
| Atlantic Daylight Time, ADT | -03:00 |
| Eastern Standard Time, EST | -05:00 |
| Eastern Daylight Time, EDT | -04:00 |
| Central Standard Time, CST | -06:00 |
| Central Daylight Time, CDT | -05:00 |
| Mountain Standard Time, MST | -07:00 |
| Mountain Daylight Time, MDT | -06:00 |
| Pacific Standard Time, PST | -08:00 |
| Pacific Daylight Time, PDT | -07:00 |
| Alaskan Standard Time, AKST | -09:00 |
| Alaskan Daylight Time, AKDT | -08:00 |
| Hawaiian Standard Time, HST | -10:00 |
There is an excellent *World Time Zones web site for current information about all worldwide time zones.
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