当从格林尼治标准时间转换到R时，请说明夏令时

I've been searching around on stackoverflow for about 2 hours now and I can't seem to answer this, very basic question. Not sure if it's how I expect things to work or R that is the issue. I haven't found this specific question here, but if it's documented and I didn't find it in the last few hours, please post the link to the question because I haven't found it!I've been searching around on stackoverflow for