similar to: Dead link in documentation of ?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") - >

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

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

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

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

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, I''ve been trying to do timezone conversion, and have some trouble getting it to work on my Windows machine. Searching the web, I found http://wiki.rubyonrails.com/rails/pages/HowtoSetDefaultTimeZone ...which explains how to set the default timezone. I''m using an environment.rb that include the lines: ActiveRecord::Base.default_timezone = :utc ENV[''TZ''] =

Hi ... I wonder if anyone can provide some insight into why the first three examples using the sunriset function (appended below, with results) give the correct answer, but the fourth generates and error. The first two use ISOdatetime with and without a time zone attribute, and the sunriset function returns the correct sunset time. The third and fourth adds 10 seconds to the ISOdatetime

Some time ago, I posted a note about what I considered to be a bug in axis.POSIXt() for R 2.8.x, relating to whether timezones in the data are obeyed on the axes. A link to that note, and to a quick and helpful response, is at the following URL http://www.nabble.com/patch-for-axis.POSIXct-%28related-to-timezones%29-td22338700.html#a22338700 Note that R 2.9.0 has been adjusted to help with

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

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

Hi All In trying to correlate some tide gauge data I need to deal with varying timezones. From the documentation on strptime, it seemed that the tz variable might have some effect on the conversion, but I'm not seeing an effect. > strptime("20061201 1:02 PST",format="%Y%m%d %H:%M",tz="PST")+0 [1] "2006-12-01 01:02:00 EST" >

Colleagues I just installed 3.4.2 on a Mac running High Sierra. I encountered the following: R version 3.4.2 (2017-09-28) -- "Short Summer" Copyright (C) 2017 The R Foundation for Statistical Computing Platform: x86_64-apple-darwin15.6.0 (64-bit) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type

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: #

Dear list members, I have come about a peculiar behavior in R (4.0.2) which I would describe as a bug. On macOS, where `strptime()` raises a warning for invalid timezone identifiers, the following code will continue to raise the original warning with every subsequent call to `strptime()`: ``` # attach a handler for warnings for this call only: tryCatch(strptime('2020-10-31 18:30', format

I'm having tons of trouble getting the fromstring to work in voicemail.conf. I've tried both voicemail and voicemail2 but the emails still seem to be coming from asterisk pbx. Has anyone had any luck with this? ================= Here's my voicemail.conf: ; ; Voicemail Configuration ; [general] ; Default formats for writing Voicemail ;format=g723sf|wav49|wav format=wav49|gsm|wav ;

Hello, I cannot reproduce this behavior and, as documented, the posted code doesn't issue warnings due to a wrong timezone but I'm running sessionInfo() R version 4.0.3 (2020-10-10) Platform: x86_64-pc-linux-gnu (64-bit) Running under: Ubuntu 20.04.1 LTS Matrix products: default BLAS: /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0 LAPACK:

Tracking down this bug was joint work with Jermoe Asselin (jerome at hivnet.ubc.ca) and Patrick Connolly (p.connolly at hortresearch.co.nz). We collectively were able to determine that this is a problem in Windows 2000 but not in Linux. Timezones of the form GMT-5, GMT+3, etc. do not work properly in Windows 2000 for nearby dates in daylight savings time although they do work for nearby dates

POSIXt vectors do not support different time zones element-to-element. If you want to keep track of timezones per element, you have to create a vector of timestamps (I would recommend POSIXct using UTC) and a parallel vector of timezone strings. How you manipulate these depends on your use cases, but from R's perspective you will have to manipulate them element-by-element. I complained about