What does 当時 mean?
当時 is a Japanese noun meaning “at that time, in those days (same as そのころ)” in English. It is written as 当時 in kanji, とうじ in hiragana, and touji in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
我々はその当時よく放課後に野球をしたものだった。
We would play baseball after school in those days.