References are printed in bold text as Issue:Page:Panel. PP, PA, and PB are the Planetary Preview, Planetary / Authority crossover, and Planetary / Batman crossover, respectively. If you would like to add to or correct entries on this timeline, please send email to mikecap@world.std.com with references as appropriate. This document was created by Mike Caprio with help from Chris Pinard (slarti@gweep.net).
| Early Cretaceous: | 4:16:1 | Shiftship Crashes | |
| ????: | 16:1:1 | Hark Ah Lien defends the Night Forest School of martial arts to preserve the secret heart of China (sometime after 200 B.C. perhaps during Han dynasty or Three Kingdoms) | |
| April 4, 1851: | 18:37:2 | Three men from the American Gun Club, in the company of Jules Verne, are launched into translunar orbit by a supergun. | |
| January 1, 1900: | 1:9:1 | Born - Elijah Snow, Dr. Axel Brass, Jenny Sparks, Kevin Sack (Lord Blackstock), Bret Leather | |
| < 1919: | 13:15:4 | Elijah Snow meets John Griffin, the Invisible Man | |
| 1919: | 13:18:1 | Elijah Snow meets Lady Van Helsing in New York City | |
| 13:3:1 | Elijah Snow finds Baron Frankenstein's lab in Germany | ||
| 1920s: | 15:12:1 | Sliding Albion's first incursion into our space | |
| 1920: | 13:14:2 | Elijah Snow finds Sherlock Holmes and a vampire in Big Ben (or is it 221B Baker St.?) | |
| ????: | 5:6:2 | Elijah Snow meets H.G. Wells | |
| 1925: | 13:22:3 | Sherlock Holmes dies of old age | |
| 2:9:2 | Elijah Snow learns Japanese | ||
| 12:10:3 | First Planetary guide published | ||
| ????: | 25:21:4 | Born: John Stone | |
| ????: | 22:29:1 | Born: William Leather, son of Miriam Langham and Danny Vincenzo | |
| 1930s: | 5:6:3 | Dr. Axel Brass meets Jenny Sparks | |
| 1930: | 15:11:1 | Carlton Marvell conferences with Axel Brass and Edison to discuss rocket science | |
| 17:2:3 | A portable televideo device made of gold is discovered by the Cummings Scientific Club in Africa | ||
| January 1931: | PA:5:3 12:6:4 |
Elijah Snow meets someone much like H.P. Lovecraft in Judgement, RI, after Lovecraft wills a hole into the Bleed into existence. | |
| 1931: | 15:12:3 | Carlton Marvell gates into the Dreamtime and goes through | |
| 1932: | PP:4:5 | Born - David Paine | |
| 1930s: | 19:7:2 | Angels crashed in Germany | |
| 1933: | 17:32:3 | A space vessel crashes near the Wagners' farm in Germany (Angels?) | |
| April 18, 1933: | 17:3:1 | Elijah Snow finds the lost city of Opak-Re | |
| October 18, 1934: | 17:26:1 | Born - Jakita Wagner (daughter of Kevin Sack and Anaykah) | |
| 1935: | 1:13:4 | Dr. Axel Brass's group builds HQ in Adirondacks | |
| ????: | 5:7:3 | Dr. Axel Brass meets The High (John Cumberland) | |
| ????: | 15:8:4 | Dr. Axel Brass and Elijah Snow cross paths at Fear Quay, Blazing Hawk Mountain, and the hidden city of Opak-Re | |
| ????: | 21:2:9 | Elijah consults magician Irma La Fantom in France | |
| 1939: | 5:14:1 | Dr. Axel Brass's group fights Daemonites in Paris | |
| PA:22:1 | Elijah Snow and Jenny Sparks sleep together | ||
| 1940: | 1:15:4 | Edison and Dr. Axel Brass build computers | |
| 1942: | 1:13:3 | Dr. Axel Brass eliminates his need for food and sleep | |
| 1943: | 1:13:3 | Dr. Axel Brass stops aging | |
| 1944: | 1:13:3 | Dr. Axel Brass learns to close his wounds with his mind | |
| January 1, 1945: | 1:22:1 | Dr. Axel Brass's group is destroyed fighting off invaders from a parallel Earth inside their snowflake quantum computer; Brass alone survives | |
| May 8th, 1945 (VE Day): | 1:9:2 | An associate of Dr. Axel Brass is killed in Berlin, his diary is taken by a Russian soldier and locked into a KGB vault | |
| August 7, 1945: | 2:20:2 | A bright light is witnessed at Island Zero | |
| 1949: | 10:21:1 | A "friend" of The Four (Elijah Snow) writes an entry about an offshoot of grecian civilization in that year's planetary guide | |
| August 1950: | 2:20:4 | Monsters appear on Island Zero | |
| 1950: | 8:17:3 | The Radioactive Woman is brought back to life by Randall Dowling and Anna Hark at City Zero | |
| 1951: | 19:8:3 | Planetary acquires a space vessel in the aftermath of a failed alien invasion | |
| 1952: | PP:4:5 | David Paine begins working on description theory | |
| 1959: | 6:4:2 | Artemis creates a rocket for travel to the moon | |
| 6:8:5 11:13:2 |
John Stone fires on Nautilus while Elijah Snow, a woman from Florida and William Leather are aboard. William Leather shoots someone. | ||
| PB:9:3 | Elijah Snow and the Conquerers of the Uncanny go to Finger Street in Gotham City | ||
| ???? 1960s: | 7:20:5 | Born - Jack Carter | |
| 1960: | 8:6:5 | The Radioactive Woman goes into hiding | |
| June 6, 1961: | 6:6:3 | Artemis sends The Four to the moon; they never make it, instead they encounter a strange force in space | |
| June 11, 1961: | 6:14:1 | Artemis-L returns to Earth | |
| 1962: | PP:7:3 | David Paine becomes an incredible creature via a description theory bomb | |
| November 22, 1963: | 6:14:4 | A competing Russian lunar launch disappears completely; The Four go underground | |
| 1964: | 6:15:1 | The Four take over the Artemis project | |
| ???? 1960s: | 5:6:4 7:4:5 |
Elijah Snow meets The High (John Cumberland) who is with Jenny Sparks | |
| 1967: | 11:9:1 | Bride kills Elijah's girlfriend in Marrakesh | |
| < 1969: | 10:15:4 | The Four kill three potential heroes | |
| 1969: | 11:9:5 | Elijah Snow meets John Stone | |
| ???? (Saigon bug-out): | 1:11:1 | Elijah Snow leaves Vietnam | |
| 1974: | 11:19:2 | Elijah Snow tells John Stone that he was hidden in the hold of the Nautilus | |
| ???? (mid-70s): | 2:20:5 | Monsters of Island Zero "die off" | |
| 197?: | X:XX:X | The Drummer is born. | |
| 1977: | 3:11:1 | Michelle of HK Planetary office is born | |
| 1983: | PP:8:4 | The creature that was David Paine dies in a shaft after 21 years of capture | |
| 198?: | 19:4:1 | Planetary builds the Zambia office, later used to hold the Angels | |
| 1985: | 7:7:1 | The Shifting Man fell out of a shiftdoor wearing a bleed-suit | |
| 1986: | PB:7:1 | Elijah Snow witnesses partial multiversal collapse at an unknown location; a third of the local population dies. | |
| 198?: | 23:3:6 | Elijah Snow, Ambrose Chase, and Jakita Wagner rescue The Little Drummer Boy (aka The Drummer) from Randall Dowling's Internet control project. | |
| 1987: | 7:12:1 | Jack Carter stops a British government assassin from killing a potential messiah | |
| 1989: | 1:2:4 | Elijah Snow moves to the desert (not actually true if he left after going MIA) | |
| 2:17:3 | Ryu eats human flesh in a sex club in Osaka | ||
| 1992: | 19:4:2 | Elijah recruits Dr. Kwelo for Planetary | |
| 1993: | 3:10:4 | Michelle joins the HK Planetary office | |
| 21:8:1 | Two strangelets pass through the earth, causing an earthquake in Antarctica | ||
| ????: | 19:4:2 | Dr. Kwelo advises Elijah on the Rendlesham Forest event | |
| 1994: | 9:19:3 | Ambrose Chase meets the Fourth Man (Elijah Snow) | |
| ????: | 14:4:4 | Ambrose Chase brings down an abduction vessel in Brazil | |
| 1995: | 1:11:4 | The year Jakita Wagner joined Planetary (claimed by her 1:11:4, refuted 9:22:4) | |
| 14:21:2 | Elijah Snow is taken by the Four and has memory blocks placed on him | ||
| 9:22:4 | The Fourth Man (Elijah Snow) goes MIA | ||
| ????: | 2:10:1 | Jakita Wagner visits Island Zero with Ambrose Chase | |
| ????: | 15:6:1 | Angela Chase is born | |
| 1997: | 1:8:4 | Planetary raids KGB vaults of forbidden knowledge | |
| 6:19:1 | Jakita Wagner and Broken Earth-A?? | ||
| 9:7:2 | Planetary raids The Four's Fictionaut project in England; Ambrose Chase is shot and disappears in a reality distortion field | ||
| 1999: | 1:3:4 | Elijah Snow (re)joins Planetary | |