How can I set the default timezone in node js

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How do I set the default timezone in node js

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The solution env TZ  Europe Amsterdam  node server js from  uhef works in cases where your app doesn t work with forked process  but when you are working with forked process  specially when you launch your app with a building tool like gulp   the command gulp will take the env values  but the process created by gulp not  your app    To solve this  you have to do     export TZ  Europe Amsterdam   gulp myTask   This will set the TZ environment variable for all the process started in the console you are working on  included all the subsequents process executed after the gulp command in the same console without the need to execute them with the prefix export TZ  Europe Amsterdam   again

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As of Node 13  you can now repeatedly set process env TZ and it will be reflected in the timezone of new Date objects  I don t know if I d use this in production code but it would definitely be useful in unit tests    gt  process env TZ    Europe London    Europe London   gt   new Date   toString     Fri Mar 20 2020 09 39 59 GMT 0000  Greenwich Mean Time     gt  process env TZ    Europe Amsterdam    Europe Amsterdam   gt   new Date   toString     Fri Mar 20 2020 10 40 07 GMT 0100  Central European Standard Time

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Here is a 100  working example for getting custom timezone Date Time in NodeJs without using any external modules    x000D   x000D  const nDate   new Date   toLocaleString  en-US     x000D    timeZone   Asia Calcutta  x000D      x000D   x000D  console log nDate   x000D   x000D   x000D

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Here s an answer for those deploying a Node js application to Amazon AWS Elastic Beanstalk  I haven t seen this documented anywhere else   Under Configuration - gt  Software - gt  Environment Properties  simply set the key value pair TZ and your time zone e g  America Los Angeles  and Apply the change   You can verify the effect by outputting new Date   toString   in your Node app and paying attention to the time zone suffix

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I know this thread is very old  but i think this would help anyone that landed here from google like me   In GAE Flex  NodeJs   you could set the enviroment variable TZ  the one that manages all date timezones in the app  in the app yaml file  i leave you here an example   app yaml     START env  env variables      Timezone   TZ  America Argentina Buenos Aires

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You can config global timezone with the library tzdata   npm install tzdata -y   After set your environment with the variable for example  TZ America Bogota    And testing in your project   new Date     I hope helpyou

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Update for node js v13  As  Tom pointed out  full icu support is built in v13 now  So the setup steps can be omitted  You can still customize how you want to build or use icu in runtime  https   nodejs org api intl html  For node js on Windows  you can do the following    Install full-icu if it has been installed  which applies date locales properly  npm i full-icu or globally  npm i -g full-icu Use toLocaleString   in your code  e g    new Date   toLocaleString  en-AU     timeZone   Australia Melbourne      This will produce something like  25 02 2019  3 19 22 pm  If you prefer 24 hours   en-GB  will produce  25 02 2019  15 19 22   For node js as Azure web app  in addition to application settings of WEBSITE TIME ZONE  you also need to set NODE ICU DATA to e g   lt your project gt  node modules full-icu  of course after you ve done the npm i full-icu  Installing the package globally on Azure is not suggested as that directory is temporary and can be wiped out   Ref  1  NodeJS not applying date locales properly   You can also build node js with intl options  more information here

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Another approach which seemed to work for me at least in Linux environment is to run your Node js application like this   env TZ  Europe Amsterdam  node server js   This should at least ensure that the timezone is correctly set already from the beginning

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You could enforce the Node js process timezone by setting the environment variable TZ to UTC  So all time will be measured in UTC 00 00  Full list  https   en wikipedia org wiki List of tz database time zones  Example package json        scripts          start    TZ  UTC  node index js

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Unfortunately  setting process env TZ doesn t work really well - basically it s indeterminate when the change will be effective    So setting the system s timezone before starting node is your only proper option   However  if you can t do that  it should be possible to use node-time as a workaround  get your times in local or UTC time  and convert them to the desired timezone  See How to use timezone offset in Nodejs  for details

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Sometimes you may be running code on a virtual server elsewhere - That can get muddy when running NODEJS or other flavors   Here is a fix that will allow you to use any timezone easily   Check here for list of timezones  Just put your time zone phrase within the brackets of your FORMAT line   In this case - I am converting EPOCH to Eastern     RE  https   www npmjs com package date-and-time const date   require  date-and-time     let unixEpochTime    seconds   1000   const dd new Date unixEpochTime   let myFormattedDateTime   date format dd   YYYY MM DD HH mm ss A  America New York Z    let myFormattedDateTime24   date format dd   YYYY MM DD HH mm ss  America New York Z

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i work with this npm package unix-system-timezone

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You can take moment timezone  It lets you set your location and also takes care of daylight saving time

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just set environment variable in your main file like index js or app js or main js or whatever your file name is  process env TZ    quot Asia Tehran quot    this will set the timezone which will be used in your entire node application

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Set server timezone and use NTP sync  Here is one better solution to change server time   To list timezones  timedatectl list-timezones   To set timezone  sudo timedatectl set-timezone America New York   Verify time zone  timedatectl   I prefer using UTC timezone for my servers and databases  Any conversions must be handled on client   We can make used of moment js on client side    It will be easy to maintain many instances as well

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According to this google group thread  you can set the TZ environment variable before calling any date functions  Just tested it and it works    gt  process env TZ    Europe Amsterdam    Europe Amsterdam   gt  d   new Date   Sat  24 Mar 2012 05 50 39 GMT  gt  d toLocaleTimeString    06 50 39   gt     d  Sat Mar 24 2012 06 50 39 GMT 0100  CET     You can t change the timezone later though  since by then Node has already read the environment variable

[node.js] How can I set the default timezone in node.js?

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