刊 (Kanji for edition)

This a suffix which you can append to ANY time-related word (morning, night,day,month, week, year, etc).

It means "this is how often this periodical is published"

Onyomi

KAN

Genghis KHAN published a weekly edition on how to dry out your sword.

It was astonishingly dull.

朝刊(ちょうかん)	morning edition ★☆☆☆☆ 朝 (morning) + 刊 (edition) = 朝刊 (morning edition)
月刊(げっかん)	monthly ★☆☆☆☆ 月 (moon) + 刊 (edition) = 月刊 (monthly)
夕刊(ゆうかん)	evening edition ★☆☆☆☆ 夕 (evening) + 刊 (edition) = 夕刊 (evening edition)