This question already has an answer here:
Is 三十四日 read さんじゅうよっか, in analogy with 四日, 十 四日, 二十四日, or is it read さんじゅうよんにち?
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
It is read さんじゅうよんにち.
If you read it さんじゅうよっか, it would sound as if there were a month in which there was a 34th day.
7 months ago