Puerto Rico vs. Aruba: Time Zone Differences in Fall/Winter

Puerto Rico does NOT observe Daylight Saving Time (DST). It stays on Atlantic Standard Time (AST, UTC-4) year-round.

Aruba also does not observe DST and stays on AST (UTC-4) year-round.

Fall/Winter Comparison (Nov–Mar)

• Eastern Standard Time (EST, UTC-5) is in effect in the US East Coast.
• Puerto Rico (AST, UTC-4) is 1 hour ahead of EST.
• Aruba (AST, UTC-4) is 1 hour ahead of EST.

Correction: The premise is wrong—both are 1 hour ahead of EST in fall/winter. They are in the same time zone (AST) year-round. The 2-hour difference would occur in spring/summer when the US East Coast shifts to EDT (UTC-4), matching AST, while Aruba/PR stay AST—so they become same time as EDT, not ahead.

Summary Table

Neither observes DST. Both are on Atlantic Standard Time permanently.