Synoptic hour
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- Synoptic hour Hour (UTC) determined by international agreement at which meteorological observations are made simultaneously throughout the world. The primary synoptic hours are every six hours, commencing at 00:00 UNC.
NSIDC - Cite This Source - This Definition - analysis, Past weather, Pressure tendency, Synoptic analysis, Synoptic chart, Synoptic code, Synoptic meteorology, Synoptic weather observation