time zones in POSIXct and xts, converting from GMT in R
I have a bunch of 1 minute returns in an
xts object with the index being
POSIXct and time zone being GMT. The returns are on NYSE so I would like to convert to the eastern time zone but I would like to take care of the daylight savings time properly. What is the best way of doing this? I am a bit confused between the EST timezone and the EDT timezone. I would like my times to convert properly to the NY time in winter and summer.