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tz-filter

v1.1.1

Published

Filter a list of timezones on what time it is there.

Downloads

2

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Links

Git

Maintainers

davidbanhamdavidbanham

Keywords

timezone

Readme

tz-filter

This module accepts an array of timezones (or objects with a .timezone property) and a specified time criteria, then filters the array for only timezones in which the criteria is satisfied.

Build Status

Installation

npm install tz-filter

Usage

I have a list of users, I want to know which users it's currently the weekend for. Say it's currently 8pm UTC

tzFilter = require 'tz-filter'
users = [
  dave:
    timezone: "Australia/Sydney" #6am Monday
  jim:
    timezone: "Europe/Copenhagen" #10pm Sunday
]
weekend =
  start: '00'
  end: '23'
  days: ['sat', 'sun']
chillers = tzFilter(users, weekend) #Chillers contains only the jim object

You can also pass an offset in minutes to answer the question "Which timezones are valid in n minutes / n minutes ago?"

tzFilter(users, weekend, 60) #Tests the condition as if it were an hour from now
tzFilter(users, weekend, -60) #Tests the condition as if it were an hour ago

This is written for a phone system that wants to know which of a list of users are currently in business hours and should have a call potentially directed to them.