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Mirror & Water Images

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medium importance~0-1 Q in Tier 11 formulas⚡ 6 shortcuts3 subtopics

Every formula in this topic, grouped by subtopic. Print it and pin it above your desk.

Mirror image of a clock

Mirror time
T_{\text{image}} = 11{:}60 - T_{\text{actual}}

Works in both directions. For 12:xx, use 23:60 minus the time.