I don't really like the idea of getting seconds and hours into Universalis, the whole idea of dividing the day into 24 segments, then those into divisions of 60 units, that seems pretty silly, and it seems unlikely that some other space civ would decide to divide its day that way identically to humans. How long it takes humans to develop should also be rather irrelevant for a space civ. (then again I'm not sure if actual humans inhabit Universalis. It wouldn't make sense but I can see that it'd be easier than making up new species and all that.)
If it's simply a tool to help us convert from Earth to Universalis, that's fine, but I don't think we should base our decisions around such conversion. I'm not sure how Universalis time even has any connection to Earth time, if it doesn't, it seems rather irrelevant.