Similar to Eva, I've always used the short-format like 16/3U/1553 for Aysun's nameday. I figured the Era was assumed, and when it wasn't it would be in texts in which dates were spelled out formally such as in historical texts ("On the 16th Sun of the 3rd Umbral Moon, 1553rd Year of the 6th Astral Era".. like you said, loooong!). In speech, during RP we just say stuff like, "Well, on the 16th Sun of the 3rd Umbral Moon we'll be meeting.." still seems long, but since the Moons don't have 'names' like our months do, there's not much we can do! Same with the days of the week not having names (Monday, Tuesday, etc, don't exist and the "week" seems to be 8 Suns long instead of 7!).
