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Definition of Zero hour
1. Noun. The time set for the start of an action or operation.
Definition of Zero hour
1. Noun. The scheduled time for the start of some event, especially a military operation; H-hour ¹
¹ Source: wiktionary.com
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1. Noun. The time set for the start of an action or operation.
1. Noun. The scheduled time for the start of some event, especially a military operation; H-hour ¹
¹ Source: wiktionary.com