Conclusion: If my hypothesis is correct, the solution would be to simply adjust your posts around Yobits time zone in comparison with your own in order to solve your post count discrepancy or maybe they (Yobit) can update their bot to use Bitcointalks timezone for post counting? I hope this clears up any confusion on the post counting.
but we don't know what time zone that yobit uses?
I have tested the sig myself the past couple days and i'm not getting any issues with posts being counted or not counted.
i think the post counted next day because he just made the post in a few hours before the day change and it's happened to me too before
If have observed it correctly, "Yobit-day" ends 04:30 pm. Also on 11.11. just 1 post has been counted for me while it have been 4 (if my "time-zone-observation is correct), so there might have been a hick-up with the bot on that day.