MediaWiki:Htmlform-datetime-invalid/qqq

Used as error message in HTML forms. This date and time MUST be formatted as a 4-digit year, 2-digit month, and 2-digit day, in the Gregorian calendar, separated with ASCII hyphen ('-') characters, followed by a space (or the letter 'T'), followed by a time formatted as a 2-digit hour 00 to 23, a 2-digit minute, and an optional 2-digit second, all separated by ASCII colons. You can localise the letters to your language or script, but you should not change the format.

• Htmlform-invalid-input (“There are problems with some of your input.”)
• Apifeatureusage-htmlform-datetime-placeholder (page does not exist)
• Apifeatureusage-htmlform-datetime-toolow (page does not exist)
• Apifeatureusage-htmlform-datetime-toohigh (page does not exist)
• Htmlform-required (“This value is required.”)