Here is the extended timeline for S:PI to help contextualise the events that take place in the campaign. All years are given in the Old Realm standard which begins with the ending of the Primordial War. A more detailed timeline covering 4995 onwards will be forthcoming soon :)
Year Event
0 End of Primordial War, Three Spheres Cataclysm
1 Merela accepts Crown of Thunders and Creation Ruling Mandate;
9 Brigid returns to Sperimin with the secrets of sorcery
100 Merela establishes central government for Creation in Meru
108 Meru War begins
109 Meru War ends with creation of Solar Deliberative and Merela as Queen; Great Geas placed on Jadeborn
121 Autocthon departs Creation
639 First Dissolution Invasion of the FF
652 First Dissolution Invasion of the FF ends with Solars casting back the Wyld
1107 Rogue Primordial strikes Creation, starting the Aftershock War
1215 Aftershock War ends
2325 Time of Cascading Years begins - Time becomes subjective
2543 Time of Cascading Years ends… kinda
2544 Period of Long Silence Begins
2576 Cam Roune is born in Deheleshen
2595 Cam Roune exalts
2626 Period of Long Silence Ends
2678 Deliberative re-established
3193 I AM activated
3366 Black Nadir Concordat emerges with secrets of necromancy
3493 Operation Wyldhand begins
3494 Operation Wyldhand ends
3550 UCS turns his face from the Solar Deliberative
3650 All Sidereals recalled to Yu-Shan for Grand Convocation
3700 The Usurpation begins followed by decades of war
3739 Start of the Shogunate
4139 Great Contagion hits Creation; Second Dissolution Invasion (Balorian Crusade)
4232 Scarlet Empress activates Realm Defence Grid, drives back the FF and founds the Realm
4234 Imperial City is founded
4250 Anisa-Shoshan executed for consorting with Yozis; Ryzala takes over B/Hea
4258 Yu-Shan gates are re-opened
4302 Syndics take control of Whitewall
4309 God War begins
4315 God War ends - Chiaroscuro & Tchoto-Killi destroyed
4644 Night of Weeping Scribes
4723 Red Dawn is born in Aliston
4734 Shroud-of-Mist is born in the Realm
4753 RD & SoM exalt
4780 Succour-in-Extremis is born in Kajeth
4782 Ennico Sorrel is born in Greyfalls
4801 SiE and ES exalt
4802 Spinning Pyramid born in Varangia
4821 SP exalts
4837 Ledaal Takezo born in the Realm
4864 LT exalts
4994 Empress disappears during Calibration
4995 Regent Fokuf elected; Mask of Winters conquers Thorns
4996 Current Year