We found one dictionary that defines the word at some time:

Phrases: at some earlier time, at some time in the future, at some point in time, having been at some past time, at some former time, more... ▸ Words similar to at some time ▸ Usage examples for at some time ▸ Idioms related to at some time ▸ Wikipedia articles (New!) ▸ Words that often appear near at some time ▸ Rhymes of at some time ▸ Invented words related to at some time