Time zones are tricky. This guide helps navigate UTC, Unix timestamps, and time zone conversions.

Unix Timestamps

Seconds since January 1, 1970. Universal and easy to store.

UTC vs Local Time

• UTC - Universal Coordinated Time
• Local - User's time zone

Best Practices

1. Store everything in UTC
2. Convert to local only for display
3. Use ISO 8601 format

Libraries

Use libraries like moment.js or date-fns for complex operations.