Timeline

= Series Timeline =
An outline of the TV Series' events that pieces them together to create an accurate timeline of events. 
Created by SomeLittleAngel 
THIS IS NOT OFFICIAL, MERELY JUST LOGICAL JUDGEMENTS BASED OFF OF CONFIRMED DATES/DATA & LOGIC
= Before the Show (Pre-freeze) =
* 2011: CW-7 is proposed as a solution to global warming, Wilford Industries begins testing the possibilities of a Perpetual Motion Engine
* 2012: Testing Continues, Big Alice is presumed built and possibly finished sometime around May of this year.
* 2013: Big Alice is definitively finished by this year. Wilford Industries is closer to developing a functional Perpetual Motion Engine & Snowpiercer is continues service as a luxury liner.
* 2014: Wilford Industries successfully patents the Perpetual Motion Engine and installs it aboard Snowpiercer. CW-7 is agreed on as a safe solution and begins development.
* 2015: Around the end of this year or early into 2016 CW-7 is launched, it begins to cool the earth at a Steady, predictable pace.
* 2016: CW-7 is launched or continues to do its job properly. Around this time, Wilford Industries begins converting Snowpiercer to a cold-resistant ark while continuing to offer luxury cruises.
* 2017: Around the start of 2017, CW-7 Begins to malfunction and starts behaving oddly, creating massive snow-storms across the world. By the end of 2017, small parts of Africa and South America have been made uninhabitable/colder than their typical climate.
* 2018: The Breslauer Weather Station makes its final Climate Model this year (As Showcased in Prop #6616-8460 Breslauer Weather Station Binder) These Climate Models show that around 55%-75% of the Earth has succumbed to the freeze and has been made Uninhabitable or at the very least Near impossible to live in.
* 2019: Not entirely clear. Big Alice receives the start of its retrofit. Snowpiercer completes retrofit early this year. Tickets go on sale for the "ark" that is Snowpiercer. The entire world at this point is likely 100% covered in CW-7's compound, no land is 100% habitable. 
= During the Show (Post-Freeze) =
* 2020: Snowpiercer departs Chicago (Show Begins). Life outside of Snowpiercer is sustained for 2 months before it becomes impossible. 5 Months post-freeze the last family occupying Breslauer commits suicide (as seen in Season 2 Episode 6) 
* 2021: Year 1 cull aboard Big Alice. Alex taken in by Wilford, retrofits complete.
* 2022: Year 2 Rebellion Aboard Snowpiercer, the first revolt from the tail, Tailies make it up to the subtrain but are held back by Jackboots.
* 2023: Year 3 Rebellion Aboard Snowpiercer, Unclear how successful it was, but we know that the utilization of chemical bombs got them as far up as sanitation or Brakemans Garrison. 
* 2024: No Notable events during this time
* 2025: Nikki is locked up for the first murder aboard Snowpiercer, it is believed that Snowpiercer begins experiencing mechanical issues.
* 2026: No Notable Events during this time
* 2027: The "true" beginning of the show, S1 & S2 take place across 2027, Layton is called up to solve Erik Sotto's murder, Tail revolts. All major events of S1 & S2
* 2028: S2 Finale occurs in 2028, At the end of the 8th revolution, and picks up with S3 in 2029 S3 also occurs across 2028 and Possibly 2029.
* 2029: While it is not confirmed in any way that 2029 is ever shown in Snowpiercer, we can assume that S3 may occur during, due to the long gaps between episodes (the S2 finale and S3 beginning being 6 months apart) We can also assume that the Unreleased Season 4 would have gone into 2029.
= Evidence/Proofs =
* Breslauer files contained in Prop #6616-8460 (That I, SomeLittleAngel own) 
* Sam Roche's Medical files (Prop #3556-8346)
* Maps produced by the Department of Cartography (are all dated as produced in 2028, were originally produced in 2021, and revamped in 2023, in-universe, not irl)
* Patents for the Perpetual Motion Engine
* Various blueprints used in set design
* 4 Various Medical files regarding Suspensions details (also owned by SLA.)