International Calendar/Hour formats

Proposed formats for parts of the hour with digit code

45-minute interval
level of detail	full time		first part implied
t	Htt	H2	—
15-minute interval
level of detail	full time		first part implied
q	Cqq	C2	—
s/q	Cqq:sss	C2:3	:sss	:3
	Cqqsss	C5	invalid
q/h	hh:q	2:1	:q	:1
	invalid		invalid
m/q/h	hh:q:mm	2:1:2	:q:mm	:1:2
	hhqmm	5	invalid
s/m/q/h	hh:q:mm:ss	2:1:2:2	:q:mm:ss	:1:2:2
	hhqmmss	7	invalid
5-minute interval
level of detail	full time		first part implied
f	fff	3	—
s/f	fff:sss	invalid	invalid
	invalid
3⅓-second part
level of detail	full time		first part implied
p/h	hh:pppp	2:4	:pppp	:4
	invalid		invalid