DST needs to be obliterated. It is past its usefulness and causes millions of dollars in software development costs ranging from servers, pc even things that many do not think about like power line sensors, etc. The shear amount of costs to an infrastructure is incredible; maybe billions world wide. I can say that my company has spent almost a million in just patches over the years because DST does not happen on a schedule rather follow governments decision of when to engage it.
It is stupid... it is old and useless and I am tired today because of it.