@jetblack/tzdata

This contains timezone data from IANA in JSON format.

Installation

The resulting package can be installed from npmjs.

npm install --save @jetblack/tzdata

Alternatively individual files can be streamed from jsdelivr.

Usage

See @jetblack/date for usage instructions.

Data Formats

The data is provided in both a verbose and minified format.

Verbose format

The verbose format presents the data as is from the IANA utilities. Each line describes an offset from UTC for a given timezone. A line has the following format.

• utc (ISO formatted date string): The date in UTC from which the offset applies,
• local (ISO formatted date string): The equivalent local date at this point in time,
• offset (ISO formatted duration string): The offset from UTC,
• abbr (string): The common abbreviation for the time zone,
• isDst (boolean): True if the offset includes a daylight savings adjustment.

Minified format

Each line of minified data has the following format.

• u (number): The time in milliseconds since 1 Jan 1970 in UTC from which the offset applies,
• o (number): The offset in minutes,
• a (string): The common abbreviation for the time zone,
• d (number): 1 if the offset includes a daylight savings adjustment.