Ïzamúte

The Ïzamúte, or Ëmúte, is the time frame denoted by a single orbit of Ëmar. As such, Ëmar will travel across the sky and beneath the horizon in a single Ïzamúte. Independent of the Ïdavý-Ðúvý Cycle, a single Ïzamúte features drastic changes in tidal systems and fuels the harvest cycle. 27 Ïzamúte make up one Ýlafe, which is the approximate time taken up by Daytime (Ïdavý) or Nighttime (Ðúvý). 
The progression of Ïzamúte has traditionally been monitored via constellations, or Tadašýl-Žýš, of which each hour, or Golte, was named. By passing in front of and thus obscuring each constellation, Ëmar thusprovided the most available means to observe the passing of the hours. 
For the Ïlýrhonidian Calendar, the first known calendar system, the Ïzamúte, then only called the Ëmúte, started and ended when Ëmar was at its highest extent in the sky. This was specially picked to coincide with the tides along the Kairn River System. The major downside was that sunrise and sunset did not properly line up; this was dealt with by assigning the last day of the previous month as simultaneously the first day of the next month. Later cultures, like most of the city-states in Varhoŋïð, opted to move the start and end of the day cycle to the rise of Ëmar over the horizon. This time frame is defined around that moment, even if it goes out sync with sunrise/sunset and that of Úlim.