Luxon is a library for working with dates and times in JavaScript.

DateTime.now().setZone("America/New_York").minus({ weeks: 1 }).endOf("day").toISO();

Guide

• DateTime, Duration, and Interval types.
• Immutable, chainable, unambiguous API.
• Parsing and formatting for common and custom formats.
• Native time zone and Intl support (no locale or tz files).

Download/install instructions

• General documentation
• API docs
• Quick tour
• For Moment users
• Why does Luxon exist?
• A quick demo

See contributing.