x1 is the date [day,{week},{month},year] of event/state x2, at location x3, by calendar x4.（
x1 （数）は x2 （事）・ x3 （所）・ x4 （暦）の日付）
(time units in x1 are specified as numbers separated by pi'e or are unit values massified with joi)（detriのx1については後ほど）
x1 (event) is dated/pertaining to day/occurring on day x2 of month x3 of year x4 in calendar x5（
x1 （事）は x2 （日）・ x3 （月）・ x4 （年）・ x5 （暦） の日付 （に生じる））
Moved from datru due to conflict with tatru.（tatru（乳）とのgismu語形衝突が指摘される前はdatruの形で定義されてゐた。今現在の日本語の辞書データもdatruのもの。）
We felt that detri just didn't work as a culturally-independent date system. The use of pi'e or joi as date mechanisms was insufficient and having the date components built into the place structure seems far more elegant.（
detri は十分に文化中立的な日付システムとして機能していないという声がある。さらに日付の機構にpi'eやjoiを使うのは不十分であり、日・月・年の要素をそれぞれPSに設けたほうがより一層すっきりしているように思われる。）
Those different answers gave you some different examples of convention, which are not suggestion for official definition.
The official definition of {detri} does not restrict the form of x1 to one convention: x1 of {detri} is any sumti that can be a symbol for a time point; the applicable symbol is defined with x4.
The form of x1 depends on context, and you can specify the form with x4 or any additional items like {fi'o}, {noi}, {ti'o}* and so on if necessary.
The official definition for {detri} should not specify the ordering because {detri} has x4 by nature to specify the calendar that defines the system of mapping of symbols to time points. If you think the current definition is confusing, we need to add explanation of usage of x4, not restriction to the form of x1.
ti'o nanca ce'o masti ce'o djedi (se'u) li 2016 pi'e 5 pi'e 22 detri lo nu mi ciska kei lo gugdejupu la gregoris
mu'o