The documentation says about this message:
- Used as a label.
- Followed by a date (yyyy-MM-dd) or a timestamp (yyyy-MM-dd HH:mm) (depends on the settings).
That means, we need two different labels depening on the settings, since we cannot express "a date" and "a date follwed by a time" in one label string.
Btw. if indeed the date and time formats are the ones given in the message documentation, I generally recommend to preferrably use localized ones instead.
- File-date ("Date")
This message is used as a label for the "tDate" input box. Source code:
SimpleDateFormat sdf; if(Main.settings.readExifHour) sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm"); else sdf = new SimpleDateFormat("yyyy-MM-dd"); tDate.setText(sdf.format(date));
"A date" is translated in Japanese as "日付", and "a date followed by a time" is translated as "日時".
- Thread:Support/About_MediaWiki:Centralnotice-start-date/en - this issue is still open.