Time Traveller's Diary (novel)

 was a book written by Chris Farnell and published by BBC Children's Books in 2020.

Publisher's summary
Whether you're sight-seeing in the constellation of Kasterborous or slumming it on planet Earth, you need to be able keep track of things - especially if you're a time traveller. This handy Time Lord-approved diary is perpetual, so will work whichever year you land in, and with a day to a page there's plenty of room to record your adventures or plan your next move.

It's also packed with useful information about holidays and anniversaries from all over the galaxy, from New Year's Day (1st January) to the Second Manifestation of Kroll (12th December 2528.) There's even a section of Useful Information, including international dialling codes, conversion tables for weights and measures, quantum mechanical equations, and how to tell a Silurian from a Sea Devil.

Plot
A human time traveller keeps a diary, recording various points throughout time and space to keep things straight because they are not adapted to time travel. During their travels, the time traveller becomes trapped away from their time machine on an invisible flying saucer with a cybernetic velociraptor above Carcassonne, France on 17 February 1283 at two o'clock in the afternoon. While hiding from the velociraptor, the time traveller pens a note at the front of the diary asking whoever finds to to help and bring tranquiliser darts and a large butterfly net.

Characters

 * Time traveller

Continuity

 * The most conquered planet in the galaxy, Tivoli, is conquered by many species over the centuries, including the Hath, Ogrons, Uvodni, Voord, Stenza, Raxacoricofallapatorians, Judoon, Kraal, Terileptils, Vinvocci, Shakri, and Drahvin. (TV: Before the Flood)
 * The employees of the Bank of Karabraxos were given their first and only day off on 2 January 4196, which was traditionally a bank holiday in Scotland, Earth. (TV: Time Heist)
 * A "mysterious figure" dressed as a monk was seen attempting to sell King Æthelred I of the Saxons used stun blasters in 871 before a battle. (TV: The Time Meddler)