Fahrenheit is nonsense. I try to pretend it doesn't exist.
I also have a problem with a 12 hour clock, especially at work when an old or stupid person asks for an advance ticket for, say, "7.30" and it seldom crosses my kind that they might actually mean "19.30" until I give them a ticket for the wrong train, which they don't notice either until on the day when they have to buy a new ticket because they have one that was only valid 12 hours previously.
I also have a problem with a 12 hour clock, especially at work when an old or stupid person asks for an advance ticket for, say, "7.30" and it seldom crosses my kind that they might actually mean "19.30" until I give them a ticket for the wrong train, which they don't notice either until on the day when they have to buy a new ticket because they have one that was only valid 12 hours previously.
