EntityQ1184932· pop 10· linked from 188 articlesΔTSign in to saveMeasure of variation of solar time from atomic timeConnectionssolar timeEntityephemeris timeEntityInternational Earth Rotation and Reference Systems ServiceEntityradio clockEntityrotational speedEntityMoonConcepttimeEntitydayEntityyearEntitymonthEntityweekEntitytime zoneEntityGregorian calendarEntitycalendar systemEntityclockEntitycenturyEntitysecondEntityInternational Standard Book NumberEntityleap yearEntityhourEntityCategoriesTime scales