Eight month birthday
Eight month birthday
Eight month birthday
In Dutch, birthday translates to "verjaardag" where "jaar" means "year" and "dag" means day, so the literal meaning of "verjaardag" comes down to "the day you grow one year older". By that logic, the day a baby grows one month older could be named "vermaanddag", where "maand" means month. It's not a real word but it's a good pun and it would get the idea across. Unfortunately it doesn't work in English.
Anniversary comes from annum, which means year, so you could have a monthversary maybe
month in latin is mensis (I'm told) so mensiversary
How can you be so sexist that you exclude women by celebrating men only?! /s
I think they get a mensesversary instead, though I don't think many of them celebrate that one (unless there's a pregnancy scare)
dag
y'like dags?
To be slightly absurd: Every day is a day you are one year older than the same day the previous year
ok
We have "årsdag" in Swedish too, but it's a general term used for stuff other than birthdays ("födelsedag")