The 5 seasons of the Babylon 5 series, each correspond to one fictional sequential year in the period 2258–2262. Each Babylon 5 season shares its name with an episode that is central to that season’s plot.

Babylon 5 TV – in order of series chronology:

• 2245–48 – In the Beginning (1’st film)
• 2256 – Babylon 5 station commissioned
• 2257 – The Gathering (Pilot Episod)
• 2258 – Signs and Portents (Season 1)
• 2259 – The Coming of Shadows (Season 2)
• 2260 – Point of No Return (Season 3)
• 2261 – No Surrender, No Retreat (Season 4)
• 2261 – Thirdspace (the 2nd film)
• 2262 – The Wheel of Fire (Season 5)
• 2263 – The River of Souls (the 3rd film)
• 2265 – The Legend of the Rangers (the 5th film)
• 2266 – A Call to Arms (the 4th film)
• 2267 – Crusade (spin-off series)
• 2271 – The Lost Tales: Voices in the Dark
• 2281 – Babylon 5 station decommissioned