YOU SAID:

i wonder what time of day pencils were created

INTO JAPANESE

私は何時に鉛筆が作られたのだろうか。

BACK INTO ENGLISH

What time did I make a pencil?

INTO JAPANESE

鉛筆を作ったのはいつですか。

BACK INTO ENGLISH

When did you make a pencil?

INTO JAPANESE

いつ鉛筆を作りましたか。

BACK INTO ENGLISH

When did you make a pencil?