summer time (daylight-saving time)

timetable, schedule

short span of time

(science fiction) Synonym of タイムトラベル (taimu toraberu, “time travel”)

time zone

(idiomatic) to kill time

half-hour (a period of time equal to thirty minutes, half an hour)

time limit; maximum time allowed

UNEP, United Nations Environment Programme

(computing) character whose appearance may depend on a user's environment, or a character which may be absent from a user's environment, i.e. character set incompatibility