I was reading a question on Travel.SE. The asker was asking whether the time on his ticket was in Daylight Savings Time or in standard time. I would imagine flight schedules are supposed to be time-zone/DST agnostic so as to avoid any potential confusion and timezone conversions.
A commenter mentioned UTC time, which makes sense to me.
So my question is: is there a standard time zone or other time standard used for tickets and/or flight schedules?