dayjs-abbr-timezone

This package is a plugin for day.js that enhances the format function to correctly output abbreviated time zones. This is especially beneficial when the standard z format does not meet your requirements.

For instance, when the timezone is set to Asia/Tokyo, the z format would usually output GMT+9. However, with this plugin, you can use the t format to output JST correctly.

Installation

npm install dayjs-abbr-timezone

Usage

This plugin depends on the utc and timezone plugins of Day.js. Please ensure you've imported and extended them as follows:

import dayjs from 'dayjs';
import utc from 'dayjs/plugin/utc';
import timezone from 'dayjs/plugin/timezone';
import abbrTimezone from 'dayjs-abbr-timezone';

dayjs.extend(utc);
dayjs.extend(timezone);
dayjs.extend(abbrTimezone);

Then you can use the format function with the t option:

const date = dayjs('2023-01-01T12:00:00Z').tz('Asia/Tokyo');
console.log(date.format('YYYY-MM-DD HH:mm:ss t')); // 2023-01-01 21:00:00 JST

This will correctly display the abbreviated timezone rather than the standard GMT display.

Issues and Contributions

If you encounter any issues or would like to contribute to the development of this plugin, please refer to this day.js issue or open an issue in this repository.