That's how people commonly give time in my language, I suspect mainly out of convenience: Quarter hour precision is possible to achieve with at most five sylla

That's how people commonly give time in my language, I suspect mainly out of convenience: Quarter hour precision is possible to achieve with at most five syllables (and typically just two); compare that to minute-level precision, which usually takes at least 5 and sometimes as many as 10. Interestingly, spoken times also commonly use the 12 hour clock, while times are almost exclusively written as 23 hours.