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