将R中的12小时格式转换为没有时区的24小时

Question

I've tried using strptime and as.Date to convert a 12 hour format to 24 hour but I'm getting NA for both. I'm not sure where the issue is

as.Date("3/23/2017 3:10:36 PM", format="%m/%d/%y  %I:%M:%S %p")
strptime("3/23/2017 3:10:36 PM","%m/%d/%y %I:%M:%S %p")

Any pointers to help me out? Preferably without a timezone appended

Answer 1

Simply use

x <- strptime("3/23/2017 3:10:36 PM", format="%m/%d/%Y %I:%M:%S %p")

(With capital %Y for 4-digit year) And then

format(x, "%Y-%m-%d %H:%M:%S")

To get a 24-h format character string without time zone.