Actually guys on Thai's shedules that has changed!
TG983 BKK-BNE STA 1200 M11
TG984 BNE-BKK STD 1945 M11
The flight is now due in BKK at 0500 the following day! I'm not sure why this has changed but I guess it's due to the arrival time in BKK!
I really hoped that I would get to see the M11 take off in daylight so hopefully next summer will see a change.