Here’s the schedule for main manga magazines I cover, use this as a guide and not a guarantee of spoiler/news release

Bessatsu Shonen Magazine (Attack On Titan):  4th – 6th every month

Jump SQ: 30th – 2nd every month.

Young Jump (Tokyo Ghoul): Every Saturday

Weekly Shonen Magazine (Fairy Tail): Every Friday/Saturday

Weekly Shonen Jump (One Piece, My Hero Academia): Every Thursday

Weekly Shonen Sunday (Magi): Every Friday