  the  is a subway line located in tokyo, japan. it is part of the of tokyo metro network. the official name is . it is 14.3&nbsp;km long and serves the wards of shibuya, minato, chÅ«Å, chiyoda, and taitÅ. the line holds the distinction of being the oldest subway line in asia. on maps, diagrams and signboards, the line is shown using the color orange, and its stations are given numbers using the letter g. ==operations== almost all ginza line trains operate on the line's full length from asakusa to shibuya. however, two trains depart in the early morning from toranomon, and some late-night trains from shibuya are taken out of service at ueno. on weekdays, trains run every two minutes in the morning peak, every 2 minutes and 15 seconds in the evening peak, and every 3 minutes during the daytime. the first trains start from shibuya and asakusa at 05:01, and the last ones reach shibuya at 00:37, and asakusa at 00:39. ==station list== {|         
Lines_of_Tokyo_Metro Rail_transport_in_Tokyo Railway_lines_opened_in_1927 Standard_gauge_railways_in_Japan