It's not odd. There have been several Gmmtv BLs which have aired on Tuesdays. Gmmtv schedule is just so packed…
in general GMMTV put their BL on Wednesday, Friday and Sunday. I think they might realized their delay with the dramas of last year and that's maybe why they put now BL on Tuesday, Thursday and Saturday (we will see if they put another BL instead of Me and Mr Thee)