Mary Pope Osborne
On-Sale Dates is a record of book on-sale dates, each checked against publisher and retailer sources and re-checked nightly.
Next book from Mary Pope Osborne
Next: Magic Tree House History's Heroes #1: The Greatest Fossil Finder, goes on sale 5 Jan 2027, in 74 days. Status: Pending.
days
Different places start the on-sale day at different moments. What the stores state about the day is further down this panel, under its heading.
One source, Apple Books (US), gives 5 Jan 2027. A second source is needed before this is listed.
What the on-sale day means
Not one of Apple Books and Kobo names an hour or a time zone for a digital pre-order. What each store says happens on the on-sale day is in its own sentence below.
An on-sale date is the first day a store is allowed to sell the book. That rule is written down at Penguin Random House, Penguin Random House UK and Hachette UK Distribution.
Every quoted sentence in full, with its link
- Apple Books
When your pre-ordered item becomes available, your payment method is billed and you receive an email.
- Kobo
You’re billed for the book on the day it’s released, not the day you pre-order.
- Penguin Random House
The date that a title is allowed to go “on-sale” and appear on shelves and on display in stores for customers to purchase
- Penguin Random House UK
These titles are supplied to retailers in advance to enable stock to be available for sale on publication day, but must not be sold or otherwise supplied to consumers before the Controlled Publication Date.
- Hachette UK Distribution
The Customer shall not sell or make available to the general public or any third party any Goods before the publication date of such Goods unless authorised specifically in writing by Hachette UK Distribution.
Reader questions and answers
Is the next book out yet?
It is not out yet. It goes on sale on 5 Jan 2027, and the date stands at Pending. Apple Books (US) is the first source on file to state that day.
What's the next book's release date?
It goes on sale on Tuesday 5 Jan 2027, and the date stands at Pending. One source on file states that same day. The date has stood unchanged since 15 Sep 2026.
Is there an audiobook?
No audiobook of Magic Tree House History's Heroes #1: The Greatest Fossil Finder is listed anywhere the site checks, and the alert fires on the day one is.
When does the paperback come out?
No paperback of Magic Tree House History's Heroes #1: The Greatest Fossil Finder is listed anywhere the site checks, and the alert fires on the day one is.
Is it out in the UK?
The UK Ebook of Magic Tree House History's Heroes #1: The Greatest Fossil Finder is dated 5 Jan 2027, and the date stands at Pending. Apple Books (UK) is the first source on file to state that day.
Books and editions
| Books and editions | Tier | Region | On-sale date |
|---|---|---|---|
| Magic Tree House History's Heroes #1: The Greatest Fossil Finder | |||
| Hardcover A format expected for a book of this kind, not listed. | No date | US | Date not held yet Get an alert |
| Hardcover A format expected for a book of this kind, not listed. | No date | UK | Date not held yet Get an alert |
| Paperback A format expected for a book of this kind, not listed. | No date | US | Date not held yet Get an alert |
| Paperback A format expected for a book of this kind, not listed. | No date | UK | Date not held yet Get an alert |
| Ebook | Pending | US | Unverified: 5 Jan 2027 |
| Ebook | Pending | UK | Unverified: 5 Jan 2027 |
| Audiobook A format expected for a book of this kind, not listed. | No date | US | Date not held yet Get an alert |
| Audiobook A format expected for a book of this kind, not listed. | No date | UK | Date not held yet Get an alert |
| No date Not yet listed: Hardcover US, Hardcover UK, Paperback US, Paperback UK, Audiobook US, Audiobook UK Get an alert | |||
Release rhythm
Roughly every 6 months, from the 68 books since 1992, the longest gap is 15 months.
- Dinosaurs Before DarkFirst on record Released on 28 Jul 1992
- The Knight at Dawn7 months after Dinosaurs Before Dark Released on 16 Feb 1993
- Mummies in the Morning6 months after The Knight at Dawn Released on 24 Aug 1993
- Pirates Past Noon7 months after Mummies in the Morning Released on 8 Mar 1994
- Night of the Ninjas12 months after Pirates Past Noon Released on 21 Mar 1995
- Afternoon on the Amazon5 months after Night of the Ninjas Released on 29 Aug 1995
- Sunset of the Sabertooth8 months after Afternoon on the Amazon Released on 14 Apr 1996
- Midnight on the Moon6 months after Sunset of the Sabertooth Released on 29 Oct 1996
- Dolphins at Daybreak6 months after Midnight on the Moon Released on 29 Apr 1997
- Ghost Town at Sundown5 months after Dolphins at Daybreak Released on 16 Sep 1997
- Lions at Lunchtime5 months after Ghost Town at Sundown Released on 12 Feb 1998
- Polar Bears Past Bedtime2 months after Lions at Lunchtime Released on 24 Apr 1998
- Vacation Under the Volcano2 months after Polar Bears Past Bedtime Released on 20 Jun 1998
- Day of the Dragon King2 months after Vacation Under the Volcano Released on 11 Aug 1998
- Viking Ships at Sunrise2 months after Day of the Dragon King Released on 20 Oct 1998
- Hour of the Olympics2 months after Viking Ships at Sunrise Released on 17 Dec 1998
- Tonight on the Titanic3 months after Hour of the Olympics Released on 23 Mar 1999
- Buffalo Before Breakfast2 months after Tonight on the Titanic Released on 18 May 1999
- Tigers at Twilight3 months after Buffalo Before Breakfast Released on 17 Aug 1999
- Dingoes at Dinnertime7 months after Tigers at Twilight Released on 14 Mar 2000
- Civil War on Sunday2 months after Dingoes at Dinnertime Released on 23 May 2000
- Revolutionary War on Wednesday4 months after Civil War on Sunday Released on 26 Sep 2000
- Twister on Tuesday6 months after Revolutionary War on Wednesday Released on 27 Mar 2001
- Earthquake in the Early Morning5 months after Twister on Tuesday Released on 24 Aug 2001
- Christmas in Camelot2 months after Earthquake in the Early Morning Released on 10 Oct 2001
- Stage Fright on a Summer Night5 months after Christmas in Camelot Released on 12 Mar 2002
- Good Morning, Gorillas5 months after Stage Fright on a Summer Night Released on 23 Aug 2002
- Thanksgiving on Thursday2 months after Good Morning, Gorillas Released on 24 Oct 2002
- High Tide in Hawaii5 months after Thanksgiving on Thursday Released on 25 Mar 2003
- Haunted Castle on Hallows Eve3 months after High Tide in Hawaii Released on 18 Jun 2003
- Summer of the Sea Serpent9 months after Haunted Castle on Hallows Eve Released on 9 Mar 2004
- Winter of the Ice Wizard6 months after Summer of the Sea Serpent Released on 28 Sep 2004
- Carnival at Candlelight6 months after Winter of the Ice Wizard Released on 8 Mar 2005
- Season of the Sandstorms3 months after Carnival at Candlelight Released on 26 Jun 2005
- Night of the New Magicians9 months after Season of the Sandstorms Released on 14 Mar 2006
- Blizzard of the Blue Moon6 months after Night of the New Magicians Released on 26 Sep 2006
- Dragon of the Red Dawn5 months after Blizzard of the Blue Moon Released on 27 Feb 2007
- Monday with a Mad Genius6 months after Dragon of the Red Dawn Released on 28 Aug 2007
- Dark Day in the Deep Sea7 months after Monday with a Mad Genius Released on 25 Mar 2008
- Eve of the Emperor Penguin6 months after Dark Day in the Deep Sea Released on 23 Sep 2008
- Moonlight on the Magic Flute6 months after Eve of the Emperor Penguin Released on 10 Mar 2009
- A Good Night for Ghosts4 months after Moonlight on the Magic Flute Released on 28 Jul 2009
- Leprechaun in Late Winter6 months after A Good Night for Ghosts Released on 12 Jan 2010
- A Ghost Tale for Christmas Time8 months after Leprechaun in Late Winter Released on 14 Sep 2010
- A Crazy Day with Cobras4 months after A Ghost Tale for Christmas Time Released on 11 Jan 2011
- Dogs in the Dead of Night7 months after A Crazy Day with Cobras Released on 9 Aug 2011
- Abe Lincoln at Last!4 months after Dogs in the Dead of Night Released on 27 Dec 2011
- A Perfect Time for Pandas7 months after Abe Lincoln at Last! Released on 24 Jul 2012
- Stallion by Starlight8 months after A Perfect Time for Pandas Released on 26 Mar 2013
- Hurry Up, Houdini!5 months after Stallion by Starlight Released on 23 Aug 2013
- High Time for Heroes5 months after Hurry Up, Houdini! Released on 7 Jan 2014
- Soccer on Sunday4 months after High Time for Heroes Released on 27 May 2014
- Shadow of the Shark13 months after Soccer on Sunday Released on 23 Jun 2015
- Balto of the Blue Dawn7 months after Shadow of the Shark Released on 5 Jan 2016
- Night of the Ninth Dragon6 months after Balto of the Blue Dawn Released on 26 Jul 2016
- A Big Day for Baseball13 months after Night of the Ninth Dragon Released on 1 Aug 2017
- Hurricane Heroes in Texas12 months after A Big Day for Baseball Released on 7 Aug 2018
- Warriors in Winter5 months after Hurricane Heroes in Texas Released on 8 Jan 2019
- To the Future, Ben Franklin!6 months after Warriors in Winter Released on 9 Jul 2019
- Narwhal on a Sunny Night6 months after To the Future, Ben Franklin! Released on 7 Jan 2020
- Late Lunch with Llamas6 months after Narwhal on a Sunny Night Released on 7 Jul 2020
- Camp Time in California8 months after Late Lunch with Llamas Released on 2 Mar 2021
- Sunlight on the Snow Leopard10 months after Camp Time in California Released on 4 Jan 2022
- Rhinos at Recess12 months after Sunlight on the Snow Leopard Released on 3 Jan 2023
- Time of the Turtle King8 months after Rhinos at Recess Released on 5 Sep 2023
- Windy Night with Wild Horses8 months after Time of the Turtle King Released on 7 May 2024
- Sea Otter Sunrise14 months after Windy Night with Wild Horses Released on 1 Jul 2025
- Christmas in Camelot Graphic Novel15 months after Sea Otter Sunrise Released on 6 Oct 2026
Change log
- Christmas in Camelot Graphic Novel: On 9 Sep 2026, No date became 6 Oct 2026. Title accepted from discovery: Apple Books (US) listing.
- Christmas in Camelot Graphic Novel: On 10 Sep 2026, Pending became Listed. Nightly check: Apple Books (US), Google Books.
- Christmas in Camelot Graphic Novel: On 10 Sep 2026, No date became 6 Oct 2026. Edition first seen: Apple Books (UK).
- Christmas in Camelot Graphic Novel: On 11 Sep 2026, Pending became Listed. Nightly check: Apple Books (UK), Google Books.
- Christmas in Camelot Graphic Novel: On 14 Sep 2026, Listed became Pending. The Google Books record counted here is the record another country's edition stands on, so it is not a second source for this one.
- Christmas in Camelot Graphic Novel: On 15 Sep 2026, Pending became Listed. Nightly check: Apple Books (US), Google Books.
- Christmas in Camelot Graphic Novel: On 15 Sep 2026, the edition was checked again and nothing changed. Nightly check: Apple Books (UK), Google Books; The Google Books record counted here is the record another country's edition stands on, so it is not a second source for this one.
- Christmas in Camelot Graphic Novel: On 17 Sep 2026, Pending became Listed. Nightly check: Apple Books (UK), Google Books.
- Christmas in Camelot Graphic Novel: On 22 Sep 2026, Listed became Pending. Nightly check: Apple Books (US).
- Christmas in Camelot Graphic Novel: On 27 Sep 2026, Pending became Listed. Nightly check: Apple Books (US), Google Books.
- Christmas in Camelot Graphic Novel: On 1 Oct 2026, Listed became Pending. Nightly check: Apple Books (UK).
- Christmas in Camelot Graphic Novel: On 4 Oct 2026, Listed became Pending. Nightly check: Apple Books (US).
- Christmas in Camelot Graphic Novel: On 6 Oct 2026, Pending became Released. Nightly check: Apple Books (US).
- Christmas in Camelot Graphic Novel: On 6 Oct 2026, Pending became Released. Nightly check: Apple Books (UK).
- Magic Tree House History's Heroes #1: The Greatest Fossil Finder: On 15 Sep 2026, No date became 5 Jan 2027. Title accepted from discovery: Apple Books (US) listing.
- Magic Tree House History's Heroes #1: The Greatest Fossil Finder: On 16 Sep 2026, Pending became Listed. Nightly check: Apple Books (US), Google Books.
- Magic Tree House History's Heroes #1: The Greatest Fossil Finder: On 16 Sep 2026, No date became 5 Jan 2027. Edition first seen: Apple Books (UK).
- Magic Tree House History's Heroes #1: The Greatest Fossil Finder: On 7 Oct 2026, Listed became Pending. Nightly check: Apple Books (US).