Weekly Shōnen Jump (週刊少年ジャンプ, Shūkan Shōnen Janpu) is the magazine where the Hungry Joker series is being published. The magazine as mentioned in the title, is a magazine that published every week, typically on Mondays. However, in Jump there is the so-called double issue in which a single published issue is regarded as an issue worth for two weeks. This usually occurs due to the following week is a holiday and the magazine is on a break.
In Weekly Shōnen Jump, there is also the Reader's Vote in which the readers are encourage to fill in a form and vote for three series that the readers regarded to have the best story of the week. This votes is then being put into consideration to measure the series' popularity and ranking establishment. Unfortunately, the information is highly classified and never been published for the readers' view. However, usually the information can be depicted from the magazine's ToC (Table of Contents). In the ToC, the popular series are placed in the front so that readers could go straight to them while the not so popular are placed at the back.
After several weeks, editors of the magazine held the Serialization Meeting where they decide the upcoming new series to publish and series that are to be cancelled due to their low popularity.