This page lists appearances of Toshiko Sato in the order in which she experienced them. This timeline is based upon observations of the Doctor Who universe and the events that occur during each of these stories. From these observations we have attempted to build a concise timeline. It is assumed that for each novel, comic, audio or television series, their published, broadcast or numbered order is the order they occur in.
- Tosh joins Torchwood Three.
- Tosh meets the Ninth Doctor.
- Gwen is recruited.
- Gwen's first day on the job.
- Gwen is still inexperienced with weapons. Set 66 years after 1941.
- Ianto keeps something secret in the hub.
- Several references are made to the events of Cyberwoman.
- Several stories take place during the course of Broken.
- Set three months after Everything Changes.
- Set in October 2007.
- Set 14 years after 1992, can be attributed to rounding.
- Captain Jack Harkness places this story in the week ending December 24th.
- Owen is visibly upset by the events of Out of Time in this story. He calls off his affair with Gwen.
- Continues where Captain Jack Harkness left off. Jack disappears from Torchwood.
- Set on Valentine's Day. Jack is currently missing and the events of The Last Beacon were several months ago.
- Gwen has started taking charge more in Jack's absence, in comparison to Captain Jack Harkness, where Owen was said to be second-in-command. Gwen is now engaged to Rhys.
- Occurs on Friday 20th of June, 114 years after 1894.
- Set between Meat and Adam.
- Continues where Reset left off. Owen is resurrected, but with no lifesigns.
- Set three days after Reset.
- Set after Owen's undeath and before Gwen's wedding.
- Gwen mentions the Nostrovite, placing this story after Something Borrowed.
- Set in 2009, before Exit Wounds.
- Toshiko is working on the Time lock.
- Continues where Fragments left off. Tosh and Owen die.
- After Day One ~ Before Fragments
- PROSE: Something in the Water
- PROSE: Trace Memory
- COMIC: The Legacy of Torchwood One!
- COMIC: Jetsam
- COMIC: Rift War!
- PROSE: Harm's Way
- PROSE: Mrs Acres
- PROSE: The Beauty of Our Weapons
- PROSE: The Book of Jahi
- AUDIO: Instant Karma
- AUDIO: The Vigil
- AUDIO: Tropical Beach Sounds and Other Relaxing Seascapes #4
- Jack, Gwen, Ianto, Owen and Tosh are all present in the hub. Jack and Ianto are in a relationship.