[travisjungroth]

If you use a solar calendar, the difference would only be by location. Solar calendar users already experience that. It applies for day-to-day stuff, but I actually can't think of any events explicitly tied to sunrise/sunset in a Western/Christian calendar. So you really need that to experience the full extreme, which Ramadan has.

Jewish holidays have that too, with the new day starting at sunset. But the calendar is lunisolar, so it wobbles buts doesn't drift. Islamic calendar has maximum differences.

[bloppe]

That's why people who use lunar calendars tend to live closer to the equator, where the annual effects of the Earth's tilt are negligible and the lunar cycle is much more noticeable

[achierius]

Before the modern era, Christian countries also demarcated their hours according to sunrise and sunset; even today, Catholic and Orthodox monasteries and seminaries use these for the Liturgy of the Hours.

https://www.usccb.org/prayer-and-worship/liturgy-of-the-hour...

[AStonesThrow]

I suppose they do/did, but quite an unfamiliar practice out here in Phoenix.

Rome today: https://wdtprs.com/2024/04/rome-24-3-day-13-14-easter-tuesda...

Any public liturgy around here is fixed to civil time so that normal laypeople can join.