Personally I dont think its ever appropriate Anyone interested in Astrology can figure out the sign Additionally there are different types of Astrology Some people follow Tropical astrology and some follow Sidereal astrology The general consensus is that its trivial The only possible time is when properly sourced the individual in question states that the believe in astrology See archived discussions below WikipediaVillage pump proposalsArchive Astrological signs on articles WikipediaCategoriesfordeletionLogNovemberCategoryPeoplebyAstrologicalSign WikipediaCategoriesfordeletionLogDecemberCategoryListsofnotablepersonsbyastrologicalsign PS Dont forget to sign your talk posts