About MangaWhen

MangaWhen is a release calendar for English-language manga and manhwa published in the US. It answers one question: when does the next volume actually come out — in which edition, format and ISBN, and whether the date has moved.

Where the data comes from

Release data is collected directly from publishers' official catalogs — Kodansha, Yen Press, Seven Seas and other US publishers — and checked by hand before it appears here. When a publisher moves a date, we keep both the old and the new one, so every entry on the Reschedules page shows what changed and when we observed it.

Follow releases

The full calendar is available as RSS and iCal, and every series page has its own feed covering just that series' dates.

Privacy

There are no accounts and we collect no personal data. The site uses Google Analytics for aggregate visit statistics only.