Would be nice to be able to switch to a different clock without changing the language of the course.
Outside of the USA and parts of Canada, 24 hour clock is widely used. It's also much easier then 12 hour clock: when a tutorial starts at 11:00 and finishes at 13:00, at a glance we see its duration is 2 hours; when a session starts at 20:00, at a glance we see it's an evening and not an 8 o'clock in the morning session.
This might work better a user setting choice. Just like language and timezone.
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