World Timezones JSON Dataset

A curated dataset of major world timezones with IANA identifiers for use in scheduling, international applications, and time conversion.

Quick Stats

• 31 timezones covering major cities worldwide
• ~4 KB file size
• Fields: id, name, abbreviation, utc_offset, dst_offset, region

Download

• Download JSON
• Open in JSONLint

Schema

Field	Type	Description	Example
id	string	IANA timezone ID	"America/New_York"
name	string	Friendly name	"Eastern Time"
abbreviation	string	Common abbreviation	"ET"
utc_offset	string	Standard UTC offset	"-05:00"
dst_offset	string/null	DST offset (if applicable)	"-04:00"
region	string	Geographic region	"North America"

Sample Data

{
  "timezones": [
    {
      "id": "America/New_York",
      "name": "Eastern Time",
      "abbreviation": "ET",
      "utc_offset": "-05:00",
      "dst_offset": "-04:00",
      "region": "North America"
    },
    {
      "id": "Asia/Tokyo",
      "name": "Japan Standard Time",
      "abbreviation": "JST",
      "utc_offset": "+09:00",
      "dst_offset": null,
      "region": "Asia"
    }
  ]
}

Usage Examples

JavaScript - Timezone Selector

const response = await fetch('https://jsonlint.com/datasets/timezones.json');
const { timezones } = await response.json();

// Build a select dropdown
const select = document.getElementById('timezone-select');
timezones.forEach(tz => {
  const option = document.createElement('option');
  option.value = tz.id;
  option.textContent = `${tz.name} (${tz.abbreviation}) UTC${tz.utc_offset}`;
  select.appendChild(option);
});

// Use with JavaScript Date API
const date = new Date();
const formatted = date.toLocaleString('en-US', { timeZone: 'Asia/Tokyo' });

Python

import requests
from datetime import datetime
import pytz

data = requests.get('https://jsonlint.com/datasets/timezones.json').json()

# Get all timezones that observe DST
dst_zones = [tz for tz in data['timezones'] if tz['dst_offset'] is not None]

# Convert time between zones
eastern = pytz.timezone('America/New_York')
tokyo = pytz.timezone('Asia/Tokyo')
now_eastern = datetime.now(eastern)
now_tokyo = now_eastern.astimezone(tokyo)

Use Cases

• Scheduling apps - Let users select their timezone
• Meeting planners - Convert times across timezones
• User preferences - Store timezone settings
• Global dashboards - Show times in multiple zones

Data Notes

• IANA IDs (e.g., America/New_York) are the standard for timezone handling
• dst_offset is null for zones that don't observe daylight saving time
• Offsets are in ±HH:MM format for easy parsing
• This dataset covers major cities; for complete coverage, use the full IANA database

Related Datasets

• Countries - Country information
• Mock Users - Sample user data with dates