Date Formatting Guide: JS, Python, and Go
Format dates for display in multiple locales. Compare Intl.DateTimeFormat, Python strftime, Go time.Format, and moment.js format strings.
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Tags: developer-tools, timestamps, formatting
Date Formatting Guide: Locale-Aware Formatting in JS, Python and Go Date formatting is where internationalisation meets developer ergonomics. The same timestamp needs to render as for an English user and for a French user, while your server stores it as . This guide covers the format string patterns for each major language, locale-aware formatting, and the common pitfalls. --- The Core Principle Separate storage format from display format. Store and transmit dates in ISO 8601 UTC (). Format for display at the last possible moment, using the user's locale and timezone. Never store a formatted date string like . It cannot be compared, sorted, or parsed reliably. --- JavaScript: Intl.DateTimeFormat The API is the right tool for locale-aware date formatting in JavaScript. It is built into…
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