Practise the thinking. Keep the judgement.
いつか (itsuka): Someday; at some time
いつか
itsuka
Meaning
Someday; at some time
Two original examples
いつか日本へ行きたいです。
I would like to go to Japan someday.
五日に友だちが来ます。
My friend is coming on the fifth.
Usage and distinctions
いつか leaves the time unspecified and can refer to the future or, in context, an unspecified occasion in the past. 五日 is also read いつか but means the fifth day of a month or five days. Check the writing and context.