＊日後／＊日前

[graysesame]

Just a quick confirm of the readings
１日　後／前 ：いちにち　ご／まえ
２日　後／前 ：ふつか　ご／まえ
１０日　後／前 ：とおか　ご／まえ
１４日　後／前 ：じゅうよっか　ご／まえ
１８日　後／前 ：じゅうはちにち　ご／まえ
１９日　後／前 ：じゅうくにち　ご／まえ
２０日　後／前 ：はつか (にじゅうにち, rare)　ご／まえ
３０日　後／前 ：さんじゅうにち (みそか, rare)　ご／まえ
100日後：ひゃくにちご　in 100日後に死ぬワニ (name of a comic stripe)

 

[Flaminius]

I think you are right for all accounts except that I find にじゅうにち quite acceptable. True, 20日 as a calendrical date is はつか, but it can be read nijūnuchi for a duration or a non-calendrical 20th day. Rigourists may find it less acceptable than I do, but it is far far more acceptable than みそか. The word itself is pretty much non-existent in Modern Japanese.

We say ōmisoka for the last day of a year; it's interesting that the derivative is more famous than the base word.

A Happy New Year!

 

[graysesame]

Happy New Year too.

 

[graysesame]

The point of this thread is that the calendrical reading for １日 is ついたち while temporal reading for１日後 is いちにちご so it is worthy comparing the two readings for the rest, and I forgot to ask if reading １０日後 as じゅうにちご is possible.

 

[Flaminius]

Is じゅうにちご for 10日後 a possible pronunciation? No, I don't think so. It's much more awkward than にじゅうにちご.