How does one elide a number-date-designation-thing in "detri"? For example, "le pa pi'e ... pi'e pa pi'e renonobi detri"? Did I even use "le" correctly? How is "le pa pi'e pa pi'e pa pi'e pa" different with the week elided?

You should definitely use "li" for numbers.If you want to be completely unambiguous, fill one of the places with the null number "tu'o":"li pa pi'e tu'o pi'e pa pi'e renonobi detri"If you're willing to tolerate a little ambiguity, leave out the week entirely:"li pa pi'e pa pi'e renonobi detri"

You should definitely use "li" for numbers.

If you want to be completely unambiguous, fill one of the places with the null number "tu'o":"li pa pi'e tu'o pi'e pa pi'e renonobi detri"

If you're willing to tolerate a little ambiguity, leave out the week entirely:"li pa pi'e pa pi'e renonobi detri"

Despite the suggestion in the definition, I have typically used ISO date format for detri:li renonobi pi'e pare pi'e ci cu detri

Despite the suggestion in the definition, I have typically used ISO date format for detri:

li renonobi pi'e pare pi'e ci cu detri

- wakaba 3.0.7 + futaba + futallaby -