Wikimedia Bugzilla is closed!

Example:
 http://commons.wikimedia.org/wiki/File:Pelican_in_its_piety.jpg#mediaviewer/File:Pelican_in_its_piety.jpg

The viewer shows "Created: 2006:03:19 10:29:45"

I'm not sure what that format is supposed to be, but it looks like an error. Afaik no human readable standard uses that format. It certainly doesn't seem like something we'd do on purpose (based on a MediaWiki Language or Moment.js format), which is enough for it to be an error from the user's perspective.

Looking at the regular file page, it seems MediaWiki has no problem parsing this Metadata:

 Date and time of data generation
 10:29, 19 March 2006

So seems fair to expect MMV to handle this as well.

Simple Commons gadgets have never had this issue. A simple extraction of the '.exif-datetimeoriginal' node in #mw_metadata would be a step forward (instead of the imageinfo API and trying to parse it). Since that's already parsed an localised server-side. Scraping is ugly, but parsing should make it better.

The value is exposed via the imageinfo API:

http://commons.wikimedia.org/w/api.php?action=query&format=json&prop=imageinfo&titles=File%3APelican_in_its_piety%2Ejpg&iiprop=timestamp%7Cuser%7Curl%7Csize%7Cmime%7Cmediatype%7Cextmetadata&iiextmetadatafilter=DateTime%7CDateTimeOriginal%7CImageDescription%7CLicense%7CLicenseShortName%7CUsageTerms%7CLicenseUrl%7CCredit%7CArtist%7CGPSLatitude%7CGPSLongitude%7CPermission&iiextmetadatalanguage=en

    "extmetadata": {
        "DateTime": {
            "value": "2006:03:19 10:29:45",
            "source": "file-metadata",
            "hidden": ""
        },
        "ImageDescription": {
            "value": "KONICA MINOLTA DIGITAL CAMERA",
            "source": "file-metadata"
        },
        "DateTimeOriginal": {
            "value": "2006:03:19 10:29:45",
            "source": "file-metadata"
        }
    },
    "mime": "image/jpeg",
    "mediatype": "BITMAP"

Bug seems to originate from https://github.com/wikimedia/mediawiki-extensions-MultimediaViewer/blob/c86b2bba26726f2c36c340eeff7afd8d7a1c0df4/resources/mmv/ui/mmv.ui.metadataPanel.js#L672-L693 where it attempts to have Moment.js parse this format. Which it can't.

Momment.js has, however, a built-in capability to parse custom formats by passing the format as the second argument:

> moment('2006:03:19 10:29:45')
< Invalid date
> moment('2006:03:19 10:29:45', 'YYYY:M:D H:m:s')
< "Sun Mar 19 2006 10:29:45"

If this colon-separated format is how all Image metadata is stored by camera's, I'd say just parse it by telling moment.js the format.