What I mean is that let's say I have a flight on 6/02/08 leaving SIN. UA flight leaves very early, and I'd most likely check-in at 5:00AM or so Singapore time on 6/02/08. It would be 2:00PM on 6/01/08 PST in Los Angeles. I am confirmed on flight that leaves at 5:00PM PST from LAX, but I'd like to stand-by (or do same day confirmed standby/sameday confirmed change) for a flight that leaves at 4:00PM. It's still 26 hrs away 5:00AM in Singapore time, but the date is 6/02/08 and thus the same calendar day.
Can I do the sameday confirmed standby then, even if it's actually 6/01/08 in the US?