similar to: Strategy for handling historical dates while avoiding timezones

#QUESTION# Is there a way to calculate the offset between timezones, e.g. from "AST" to "GMT"? #DETAILS# I am working with data files that use local time, and that indicate the timezone by e.g. "AST" (Atlantic Standard Time, my local time) in a header. I was guessing that > ISOdatetime(2008,1,1,1,0,0,tz="GMT") - >

This is a follow-up to the thread ending with: http://rubyforge.org/pipermail/vpim-talk/2008/000120.html I too am in search of some ruby parser for icalendar which properly handles timezones on the datetimes in the icalendar RFC. As I understand it there are actually three types of times. 1) UTC times with a string form of yyyymmddThhmmssZ note the trailing Z indicates zulu time aka utc. 2)

I have some questions and comments on timezones. Problem 1. # get current time in current time zone > (now <- Sys.time()) [1] "2003-07-29 18:23:58 Eastern Daylight Time" # convert this to GMT > (now.gmt <- as.POSIXlt(now,tz="GMT")) [1] "2003-07-29 22:23:58 GMT" # take difference > now-now.gmt Time difference of -5 hours Note that the difference

I have read the documentation, performed the diagnostic tests, checked the archives, so if the answer is there, please accept my apologies in advance and simply direct me. I am running redhat Linux 2.0.3 and using smbmount to mount several directories from NT3.51 servers which are distributed gloablly in different timezones. Once mounted the files all have local timestamps which makes syncing

Hi all, I have noticed something I can't solve regarding Asterisk (latest 1.6.0.x). My server is set at the GMT+2 timezone. The clock is ok (I can get the correct time at the terminal). But today I got a call at a time where Asterisk should have gone 'off business hours'. All log times are wrong by exactly 2 hours. As if Asterisk would just sit on GMT, ignoring the GMT+2

HI, I am creating n onlinecalendar sort of functionality for which the user input for events is taken. To make it user friendly, its left to the user to write the time down rather than selecting it from a datetime field in a form . The user can also specify a timezone. And while doing so its obvious that most inputs will be an abbreviation. My question is - is there a way to convert

I am finding that axis.POSIXct uses the local timezone for deciding where to put tic marks, even if the data being plotted are in another time zone. The solution is to use attr() to copy from the 'x' (provided as an argument) to the 'z' (used for the 'at' locations). I have pasted my proposed solution in section 1 below (as a diff). Then, in section 2, I'll put some

Does anyone know a good way to hook into the AR to_xml() method to allow for adjusting datetimes to a user''s timezone? Basically I want a user to be able dump all their data before cancelling an account. I store all datetime info as UTC as per the recommendations of Jamis Buck and Scott Barron in the Rails Recipe article "Dealing with Timezones". Come to think of it I bet

Hello everyone I wonder if anyone can point me to the library for timezone management with DST support, which has timezones, like flickr has. I know that there is TZInfo, but it''s a bit different for it has huge list of available timezones in ''Continent/City'' format. I would like my application to have timezones list more like on flickr (or windows regional settings) -

I have looked at ?as.POSIXct ?POSIXct and many of the references that are on those pages. I am bewildered with timezones. Is there a way to get what would go into tz="" for making a function that uses POSIXct to be able to be used in all of the timezones in just the united states? This is for both windows and mac... this is the function that I am wanting to use it with

Hello, I have a question regarding the date objects and timezones. My current understanding is, that a Date object does only save the days from the origin and no more information about timezones or other information (please correct me if I am wrong). But if I use d = as.Date("2024-11-11") or d = as.Date("2024-11-11", tz="America/New_York") the date object is

Hello All, Is there any way to change the timezone on the fly? I have this little time clock program running on Asterisk system developed using PHPAGI. Currently, whenever user logs in, Asterisk will prompt the current system time using "$agi->say_time();" which executes "SAY TIME". Now the current timezone set on the system is "PST", and I have a request to

Hi guys/girls, How are you keeping ? A while ago I mentioned a problem that I'm picking up with Samba with OpenLDAP and the "logon hours" restrictions which are implemented via the NT 4.0 User Manager. Basically my problem was that users were unable to login 2 hours before the actual restriction should kick in. At the time I thought that perhaps the problem was caused by

Does anyone know the best way to track time zone information. There doesn''t seem to be much documentation on this. So far it seems like a simple db field like create table accounts ( id int unsigned not null auto_increment, name varchar(50) not null, time_zone varchar(50) not null, ... primary key (id) ) and a class like class Account < AR ...

Hi all, I am testing R 4.0 and ran into an issue with timezones on Ubuntu Focal: converting a timestamp to another timezone results in NA: as.POSIXct(as.POSIXlt(Sys.time(), tz = "CET"), tz = "EST") This only happens on Ubuntu Focal, it seems to work fine on Ubuntu Bionic. I am the standard ubuntu docker image icw/ r-base from Dirk's ppa:edd/r-4.0 on both systems. Am I

This is for Wine 1.1.28 compiled under a customised personal Linux based on Slackware. When running winefile from a terminal, get a line: "fixme:ntdll:find_reg_tz_info Can't find matching timezone information in the registry for bias -720, std (d/m/y): 5/04/2009, dlt (d/m/y): 27/09/2009" Wine source: ../dlls/ntdll/time.c holds the function "find_reg_tz_info". Running: #

This link is referenced in ?timezones and appears to have been moved/removed. Is there a replacement? http://www.twinsun.com/tz/tz-link.htm [[alternative HTML version deleted]]

I'm trying to generate POSIXct times in a call to a C function. However, I'm having trouble generating times with the proper offset from UTC. Can anyone offer any help with this issue? I've looked at R-2.0.1/src/main/datetime.c, but I was not able to find an example that I could easily pull from that file. Thanks in advance, Whit Here is my example in C: #include <stdio.h>

24 ???????? 2024 ?. 17:10:13 GMT+03:00, Luca Brinkmann via R-help <r-help at r-project.org> ?????: > My current > understanding is, that a Date object does only save the days from the > origin and no more information about timezones or other information > (please correct me if I am wrong). You are correct. > the date object is displayed in my RStudio environment as

Hi, As I didn't get any response on the general help list and I don't know if there is a bug in action I am trying my luck here. I was highly surprised to find out that during simple operations (see code below) the timezone attribute for POSIXct data is lost and then, upon the next interpretation, the system settings are used (which are plain wrong in my case). I have used R 2.8.0