I am on the 2nd part of a 10 part storyline and the journal still says it expires in a month. I suspect the timers have changed since this was written --A Shirley 20:06, 4 July 2011 (UTC)
Having just said this, the 3rd part has a 1 week expiry.
"They (storyline missions) are the only way of raising standings towards factions." This information is wrong as there are for example datacenter agents who trade tags for faction standing and also other types of cosmos missions for increasing a player's faction standing. --Slave 538791 10:56, 29 September 2011 (UTC)