Pikaday: A friendly guide to front-end date pickers

> Travel booking often has a fixed schedule with limited time options, such as every 15 minutes. Relative dates like “Today” and “Tomorrow” can be easier to understand.

Except when you're booking a flight and you're not sure whether "today" is based on your local time, the server's local time, or GMT. (I often book flights right about midnight and find words like "today" and "tomorrow" to be completely confusing.)

Montreal public transit times used to be on some kind of like, 28-hour clock. Bus times after midnight would be labelled 27:30 or something. Suuuper confusing. It sounds so bizarre in fact, that I'm doubting my memory a bit, but I'm certain it was like that (say around 2006 or so).

I've seen this in Japan as well. A store that's open from, let's say, 8am to 1am will actually advertise itself as being open from 8am to 25pm. I guess the perception is that it's confusing to have a range where the smaller number comes before the bigger number.

I think it is more common for them to write 8:00 to 25:00 - omitting AM and PM.

AM and PM is used in a few languages (mostly English) but many don't have it in their vocabulary at all, which probably includes Japanese.