America/Aruba

Time zone identifier: America/Aruba

Current civil offset: -04:00 (AST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1912-02-12

Local Mean Time (LMT): -04:40:24 based on geographic meridian

Total recorded transitions: 2 transitions across 3 distinct offsets

Associated countries: AW

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Historical Offset Step Chart (1880 to Present)

-6:00 -5:00 -4:00 -3:00 1880 1900 1920 1940 1960 1980 2000 2020

Text summary: America/Aruba shifted between 3 distinct offsets from 1912-02-12 through the modern era.

Complete Transition History (2 Transitions)

UTC Instant Local Wall Time Shift Abbreviation DST Effect
1912-02-12T04:40:24Z 1912-02-12 00:10:24 -04:40:24 → -04:30 -0430 No gap
1965-01-01T04:30:00Z 1965-01-01 00:30:00 -04:30 → -04:00 AST No gap

Notes from the Maintainers

Source: backzone (Lines 448 to 449)
Aruba

Years on Record

Methodology Note: The 1970 Rule

tzdb guarantees accuracy for timestamps from 1970 onwards. Transitions prior to 1970 represent best-effort historical reconstructions.