SergeiBaklan, Thanks for raising this concern about consistency within the Time Zones field. Unfortunately, I don't have a good answer for the logic behind why inconsistent time zone names are listed in the field. This is more of a byproduct of how we are curating our data from the web. It is most likely that for these subdivisions we found multiple time zones attributed to them with the various names, and for the countries we may have found the data from a different sources that specifically only mentioned GMT. Again, thanks for raising this, we have discussed what we can do here to help enable you to Sort and Filter (and do math on times) with ease, but we haven't found a great solution. What would you want to see in this case? (Just GMT or everything?) What about regions that span multiple Time zones? I suspect that our solution to this isn't time zone specific, but really relates to how we provide sort and filter on these appended lists.