📅 日数計算ツール
2つの日付の間の日数を計算したり、今日から指定日までのカウントダウンができます。
📌 よく使うプリセット
日
※ 祝日の考慮はしていません。営業日計算は土日のみ除外します。
※ 計算はブラウザ内で完結します。入力したデータはサーバーに送信されません。
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