It does occasionally run during the day. I have found 85% of my EUA's running overnight (when there is less demand on comnputer time) and the balance at various times including morning and afteroon, and a couple of times, while I was on my way to the airport.
EUA should be run trhoughout the day. Otherwise, as inventory is added to the R bucket during the day it can get plucked off before EUA is run, allocating seats as ordered by the system.
Originally Posted by HeathrowGuy
I might be completely wrong on this, but I thought someone posted a while back that the CO EUA system will soon operate more like the NWA system, ie, run several times throughout the day at opposed to midnights + T-3 hours.