データがありません
通知
通知はありません
いつか
Since when (Don't know)
いつか(は)
sometime; someday; one day
いつかの ...
Previously
ともなく/ともなしに
somehow; without knowing; without thinking; unconsciously ~
ともなく,ともなしに
Doing A without thinking about it/intending to; To do A mindlessly
いつか ... た
Formerly (At some point)