Pretty common for laundromats nowadays.
Thirty-one to thirty-five minutes is about standard for "Normal" these days when it comes to laundromat machines. The SQ washers at our local say "31" minutes but often cycle is done at 30 minutes and timer just clears/door unlocks.
Needless to say for badly stained and or heavily soiled washing no, cycle times aren't long enough. Especially if counting on enzymes and oxygen bleach to do their jobs well.