In the Decimal 3-Year Calendar, the fundamental grouping of days is not a month or year, but a hectode, which is approximately 100 days, a bit more than a quarter or season – the exact measure would be a hectoday. Three solar years (1095–1096 days), or a kilode, are split into 11 hectodes, so four or five of them contain only 99 days. Eleven such cycles, i.e. 33 years or a myriane, contain exactly 12053 days in 121 hectodes, 47 (ca. 39%) of which have 99 days only. The potentially day left out is counted as
00, the others are
99, so two digits always suffice. Each hectode is divided into ten week-like decanes, which usually last 10 days (
9, decaday) accordingly, except for the first one.