date added; addition date
Used in contexts such as databases, lists, or records to indicate the date an item was added.
このデータベースでは、各レコードに追加日が記録されています。
In this database, the date added is recorded for each record.
Compound of 追加 (ついか, 'addition') and 日 (ひ, 'day'), with rendaku voicing of ひ to び.