[NTG-context] \time pendant to \currenttime

Hi list, I was wondering if there is a "\time" equivalent similar to "\currentdate" -> "\date"? I know from the wiki (and source) that there is "\currenttime", but "\time[h=8, m=30]" will not typeset "8:30", so it doesn't seem to be implemented. I understand that such an implementation might become arbitrarily complicated … In fact, I'm trying to typeset durations like "3:30 min" which is not exactly a "time" either, but neither \unit{3:30 minute} nor a math formula achieve the expected rendering. Of course, one could just type it plainly, but maybe this little gap is worthwhile considering in a future version. :-) Thank you! Best Benjamin