I think I’m so used to working with ancient hardware that runs on cryptic incantations and relies on knowledge that was lost to the ages before I was born that I sometimes forget that it doesn’t always have to be like this.
DST change today, realised the new Cisco SPA525g2 phones don’t have a proper DST rule in place. After googling unsucessfully for a few minutes I remembered that these are relatively new phones. The manual might actually be useful. And it was.
So the proper DST code for Mountain Time is: