R help - Nov 2009 - Convert H:MM:SS PM /AM into 24 HR syntax

I've got an array of times in H:MM:SS PM/AM format, e.g. "5:27:15
PM" (no leading zero), and I would like to convert them over to 24 HR
syntax, e.g. HH:MM:SS.

If it matters, the times are from the Central Time zone. 

Is there a command to convert the time to a 24HR format? 

I tried the following: 
ptime("5:27:15 PM", "%H:%M:%S")
[1] "2009-11-04 05:27:15"
> strptime("5:27:15 PM", "%h:%M:%S")
[1] NA
> strptime("5:27:15 PM", "%R:%M:%S")
[1] NA
> strptime("5:27:15 PM", "%r:%M:%S")
[1] NA
Note that the top one is incorrect due to it not using the "PM"
indicator.

Thank you for any insights any feedback that can be provided.

Try this:

strptime("5:27:15 PM", "%I:%M:%S %p")

On Wed, Nov 4, 2009 at 3:19 PM, Jason Rupert <jasonkrupert at yahoo.com>
wrote:
> I've got an array of times in H:MM:SS PM/AM format, e.g. "5:27:15
PM" (no leading zero), and I would like to convert them over to 24 HR
syntax, e.g. HH:MM:SS.
>
> If it matters, the times are from the Central Time zone.
>
> Is there a command to convert the time to a 24HR format?
>
> I tried the following:
> ptime("5:27:15 PM", "%H:%M:%S")
> [1] "2009-11-04 05:27:15"
>> strptime("5:27:15 PM", "%h:%M:%S")
> [1] NA
>> strptime("5:27:15 PM", "%R:%M:%S")
> [1] NA
>> strptime("5:27:15 PM", "%r:%M:%S")
> [1] NA
> Note that the top one is incorrect due to it not using the "PM"
indicator.
>
> Thank you for any insights any feedback that can be provided.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O