Unfortunately the assigned episode numbers, release dates, and production numbers do not match the intended viewing order of the show's creator, <PERSON> (JMS).
Intended Order
The Intended Order for all TV Episodes and Movies as listed below is the order that JMS intended the show to be viewed in for full dramatic impact. This viewing order was taken from JMS's interviews, notes, and discussions. 378
This is not a chronological order of events, and not everything is meant to make sense at first as some episodes have flashbacks and visions of things. This order (including the very similar Lurker's Guide) is popular among devoted fans.
Source 1: https://babylon5.fandom.com/wiki/Viewing_Order
Source 2: http://www.b5tv.com/showthread.php?t=11675
Note: For the Crusade spin-off the Chronological Order option is listed below as it is enjoyable and popular among devoted fans without continuity issues or jarring inconsistencies. This Crusade order is from the Babylon 5 Historical Database as authorized by JMS, with one adjustment to correct a continuity issue in "Ruling From the Tomb". 55