I'm confused about LHR-HND's award release timing. I'm sitting on a dummy roundtrip HND-LHR and want to change the return flight to late 2025. Given the T-355 timeline, at what time should I check for the return flight's availability? For example, 355 days from right now in Japan (10/31) is 10/21. Should I expect LHR-HND to open up for 10/21's 7pm departure even though it's still 10/30 in London?