@yongsua Hello, we had some technical issues yesterday, however it should be already fixed. Thank you for your patience and understanding.

Hi @yongsua It's not possible. Although it would be interesting to see your comparison between 00z/12z ref times and other ref times of the given day, I'd doubt it could be more accurate every time. Of course, there can be scenarios and locations where it happens more frequently, but in the big numbers, this is very improbable. Out of curiosity, which weather model and location are you referring to?