30分オフセット
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<timefyi-glossary slug="half-hour-offset"></timefyi-glossary>定義
UTC+5:30（インド）、UTC+5:45（ネパール）、UTC+9:30（オーストラリア北部準州）など、1時間の整数倍でないタイムゾーンオフセット。歴史的・政治的・地理的理由から生じる。