San Juan operates on Atlantic Standard Time (AST), which is UTC-4. To find the current time in San Juan, subtract 4 hours from Coordinated Universal Time (UTC). Puerto Rico does not observe Daylight Saving Time, so the time remains consistent throughout the year.

No, San Juan and the rest of Puerto Rico do not observe Daylight Saving Time. The territory stays on Atlantic Standard Time (AST), which is UTC-4, throughout the year.

London (GMT/BST): San Juan is 4 hours behind London when the UK is on GMT (winter), and 5 hours behind when the UK is on BST (summer).

New York (EST/EDT): San Juan is 1 hour ahead of New York when NY is on EST (winter), and the same time when NY is on EDT (summer).

Tokyo (JST): San Juan is 13 hours behind Tokyo, as Japan Standard Time is UTC+9.

Puerto Rico's major cities include Bayamón, Carolina, Ponce, Caguas, Guaynabo, Mayagüez, and Arecibo. San Juan is the capital and largest city.

San Juan is Puerto Rico's capital and largest city, known for its historic Old San Juan district with colorful Spanish colonial architecture, the fortifications of El Morro and San Cristóbal, vibrant nightlife, beautiful beaches, and rich cultural heritage blending Spanish, African, and Caribbean influences.