Board Thread:Wiki Discussions/@comment-5407586-20140412165637/@comment-3279282-20140416093915

To elaborate further on the Double Issue topic:

There are four regular times the Weekly Shonen Jump is releasing a Double Issue. These for times are
 * Issue No.4-5, released in the third week of December, no release in the last week (end of the year)
 * Issue No.6-7, released in the first week of January, no release in the second week (new year's eve)
 * Issue No.22-23, released in the last week of April, no release in the first week of May (Golden Week)
 * Issue No.36-37 or 37-38, released in the first week of August, no release in the second week (Obon)

Week is a weird word... week week week

Anyhow, since we can read the Weekly Shonen Jump earlier than they're officially published, it means at those four times, we can read the issue that's published after the break during the break. This is because they're made and shipped before the break.