Time Zone Database

File Format
Name	Time Zone Database
Ontology	Electronic File Formats Calendars Time Zone Database

The Time Zone Database (also known as tz or zoneinfo) is used by various systems to convert between local time and UTC time, by tracking the history of the time zones around the world.

Links

• IANA page on Time Zone Database
• RFC 5667 - Procedures for Maintaining the Time Zone Database
• Time Zone Data Distribution Service spec