its been isuued by manchester city council. im just wondering why they have failed to put the times on the ticket when the contravention is listed as parking for longer than permitted. How do i know i have parked longer than the two hours if there is no start time on the ticket

Hi all, I returned from uni today to find i had received a parking ticket, the reason given being parking for longer than permitted. Im genuinely not sure if i was parked for longer than the two hours permitted as I had lessons which lasted around 1 hour 50 mins and so i could have been five to ten mins over at the very most. The problem is on the parking ticket where it states the times you were parked there is no from: time, only a time that the warden issued the ticket. This means that i dont actually know that i was over the permitted time because its not filled in on the ticket. I just wondered if there was any way i could contest this ticket. Any help would be appreciated. Thanks