Yeah, looks like it would work out fine. Since synchronous communication breaks down pretty quickly even on merely interplanetary levels, the remaining use for

Yeah, looks like it would work out fine. Since synchronous communication breaks down pretty quickly even on merely interplanetary levels, the remaining use for calendars and timekeeping is basically event planning. For that difference in reference points and interval duration is not that important, as long as you can compensate for that, making events happen at a time you expect in a place you expect. We're doing that fine already, communicating with our deep space probes.