Weekly Shonen Jump #647

When was Weekly Shōnen Jump #647 published?

Weekly Shōnen Jump #647 has a cover date of April 10, 1981 (it went on sale earlier, on March 25, 1981), published by Shueisha in Japan.

Which manga series were featured in Weekly Shōnen Jump #647?

Weekly Shōnen Jump #647 (cover-dated April 10, 1981) featured Sannen Kimengumi Jōgai-hen Him, among other ongoing serializations.