Peter Beckman wrote:
* GMT is used to imply UT1, but sometimes UTC, but really GMT is just massively confusing and you shouldn't use it, either in conversation or in your servers/routers, because nobody is really sure without reading a lot of documentation what GMT means for each manufacturer/OS/software.
WET/WEST is a little more precise and less confusing than GMT/BST (or IST if you're of a more celtic nature, although this confuses people living on the Indian subcontinent) although in tz-land, GMT has a specific and pretty consistent definition. But it is generally a bad idea to use it. People get confused.
* When writing code regarding dates and times, know that any year may have 366 days, and any minute may have 61 seconds.
Or 59 seconds in the case of a negative leap second. Nick