It's a long story.
Well managers think more about deadline. Posting OOP is hard to predict as it isn't a certain time and lot of others can help about it as well. All you can do, looking the OOP and send picks for every matches on PTS.
You know isn't easy to be a manager, they have their own duty, not to talk about private live and everything can happen, you never know. Look what happened to me.
Being honest, posting diffs and OOP both in the best time... it should be someone who works with PCs or isn't working at all. Or really the perfect time zone but there aren't enough managers for that.