日 '<var>X</var>' は DateTime リテラル '<var>Z</var>' の月 '<var>Y</var>' では無効です。 - unlocalize.com

Message in Japanese (日本語)

日 '<var>X</var>' は DateTime リテラル '<var>Z</var>' の月 '<var>Y</var>' では無効です。

Unlocalized message

The day '<var>X</var>' is not valid for the month '<var>Y</var>' in DateTime literal '<var>Z</var>'.

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Dutch (Nederlands) Finnish (suomi) French (Français) German (Deutsch) Greek (Ελληνικά) Hebrew (עברית) Hungarian (magyar) Italian (Italiano) Prior (Message) Korean (한국어) Norwegian (Bokmal) (Norsk (Bokmål)) Polish (Polski) Russian (Русский) Spanish (Español) Swedish (Svenska) Turkish (Türkçe) Chinese (Simplified) (中文(简体)) Arabic (العربية) Next (Message) Chinese (Simplified) (中文(简体)) Chinese (Traditional) (中文（繁體）) Czech (Čeština) Danish (Dansk) Chinese (Traditional) (中文（繁體）) Portuguese (Brazil) (Português (Brasil))