When was Weekly Shōnen Jump #594 published?

Weekly Shōnen Jump #594 has a cover date of May 5, 1980 (it went on sale earlier, on April 1, 1980), published by Shueisha in Japan.

Which manga series were featured in Weekly Shōnen Jump #594?

Weekly Shōnen Jump #594 (cover-dated May 5, 1980) featured Kochikame, Kinnikuman, Ring ni Kokero (one-shot by Ma, among other ongoing serializations.

On shelves: April 1, 1980 – May 5, 1980

Kochikame Ch. 178
Kinnikuman Ch. 47
Ring ni Kokero (one-shot by Masami Kurumada, with a small twist on the title of the serial he was also publishing in the magazine at the time)
Dr. Slump Ch. 14
Izumi-chan Graffiti Ch. 15
Susume!! Pirates Ch. 123
Tennis Boy Ch. 38
Rikki Typhoon Ch. 16
Ring ni Kakero Ch. 166
Captain Tsubasa (this one-shot was the first published work of Yoichi Takahashi, and would later be revamped into the serial that began running in this magazine a year later, eventually becoming one of the most successful manga franchises of all time)
Go☆Shoot Ch. 51
Monster to Love-Ru
Diamond Star Ch. 14
Futari no Derby Ch. 25

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