San Juan
--:--
America/Puerto_Rico
The local time in Puerto Rico, live to the second. The whole country is on UTC−4 all year, with no daylight saving time.
The live clock at the top of this page shows the current time in Puerto Rico. San Juan is on UTC−4 right now.
Puerto Rico uses AST, which is UTC−4 today (IANA time zone America/Puerto_Rico).
No. Puerto Rico stays on UTC−4 all year, so its clocks never change.