Well this is interesting: the world's time nerds are ending leap seconds. The reason is a bit surprising - there'd need to be a negative leap second in 2029 that could potentially wreak havoc on modern computer systems.
www.scientificamerican.com
Now just do the same with DST.
Scientists just voted to redefine how the world keeps time
A new system, called the “leap hour,” will allow Earth’s rotation and official time to fall out of alignment by a full hour
Now just do the same with DST.
