created: 20150117190213631 modified: 20230226144641763 tags: Concepts title: Date Fields type: text/vnd.tiddlywiki Certain [[fields|TiddlerFields]] of a tiddler are used to store dates and times. TiddlyWiki supports dates from the year -9999 to the year 9999. The two standard date fields are <<.field created>> and <<.field modified>>. Values of date fields are 17 or 18-character strings: * <<.from-version "5.1.23">> an optional minus sign `-` to indicate a negative year * 4 digits for the year * 2 digits for the month * 2 digits for the day * 2 digits for the hour * 2 digits for the minute * 2 digits for the second * 3 digits for the millisecond To avoid problems arising from differences of time zone, TiddlyWiki always uses [[UTC|https://en.wikipedia.org/wiki/Coordinated_Universal_Time]]. The [[DateFormat]] template for storage of dates in these fields is `[UTC]YYYY0MM0DD0hh0mm0ss0XXX`. As an example, the <<.field created>> field of this tiddler has the value <<.value """<$view field="created"/>""">>. Dates can be [[converted to other formats|DateFormat]] for display: <$macrocall $name="wikitext-example-without-html" src="""<$view field="created" format="date" template="DDD DDth MMM YYYY"/>""">