Always up to date list of time zones, with grouping and major cities

A small tool to convert between Windows time zones and IANA

Parsing and formatting date strings using IANA time zones for date-fns.

A JavaScript library to group time zones based on offset (DST-aware), name or region.

A TypeScript library for mapping between IANA and Windows time zones

A typescript type declaration of time zones

Country data for 250 countries and territories: ISO 3166-1 codes, names, capitals, currencies, dialing codes, subdivisions, borders and IANA time zones. No dependencies.

 

Natural-language evaluation of arithmetic, unit conversion, and time zones.

Wrapper above js native Date object for using with time zones that differs from current

Convert US zip codes to time zones

Immutable date and time handling for JavaScript with locale-aware formatting, parsing, calendar math, and IANA or fixed-offset time zones.

Domain rules for time zones, DST-safe scheduling, availability windows and localization. No DOM, no framework.

Calendar date math (ISO 8601 day / PlainDate). date-fns-shaped. No Date. No time zones.

Simplify Date Manipulation with Time Zones in JavaScript

Explicit TypeScript formatting for dates, time zones, numbers, bytes, durations, percentages, and Korean won.

Wall-clock and interval arithmetic across time zones, without a dependency

List of time zones you can use for your dropdown forms.

React professional scheduler with resource columns, drag/drop, resize, business hours, buffers, time zones and DST-safe appointments.

Headless layout model for resource scheduling, overlaps, business hours, time zones and DST-safe positions.