Clockjumper

Time difference

San Francisco to San Juan Time Difference

San Juan is 3 hours ahead of San Francisco — when it's 12:00 PM in San Francisco, it's 3:00 PM in San Juan. (San Francisco (America/Los_Angeles, PDT); San Juan (America/Puerto_Rico, AST).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.

Quick answer

San Juan is 3 hours ahead of San Francisco. The best window for a call is 9 AM–2 PM in San Francisco, which is 12 PM–5 PM in San Juan — a 5-hour overlap inside 9 AM–5 PM on both sides. Clocks change on November 1, 2026, which briefly shifts the gap between San Francisco and San Juan — the converter on this page always reflects the correct offset for the date you pick.

  • When it's 9:00 AM in San Francisco, it's 12:00 PM in San Juan.
  • When it's 9:00 AM in San Juan, it's 6:00 AM in San Francisco.

San Juan is currently 3 hours ahead of San Francisco.

San Francisco • PDT
3:44 PM
Sunday, Aug 23
San Juan • AST
6:44 PM
Sunday, Aug 23

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Best times to meet

The 9 AM – 5 PM business windows in San Francisco and San Juan overlap for 5 hours. 9 AM–2 PM in San Francisco is 12 PM–5 PM in San Juan. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.

Quick conversion table

San FranciscoSan Juan
12 AM3:00 AM
1 AM4:00 AM
2 AM5:00 AM
3 AM6:00 AM
4 AM7:00 AM
5 AM8:00 AM
6 AM9:00 AM
7 AM10:00 AM
8 AM11:00 AM
9 AM12:00 PM
10 AM1:00 PM
11 AM2:00 PM
12 PM3:00 PM
1 PM4:00 PM
2 PM5:00 PM
3 PM6:00 PM
4 PM7:00 PM
5 PM8:00 PM
6 PM9:00 PM
7 PM10:00 PM
8 PM11:00 PM
9 PM12:00 AM (next day)
10 PM1:00 AM (next day)
11 PM2:00 AM (next day)

Daylight saving

On November 1, 2026, San Francisco shifts for daylight saving. After that, San Juan will be 4 hours ahead of San Francisco (currently 3 hours ahead of San Francisco). The converter and the tables above always reflect the correct offset for the date you pick.

  • San Francisco is currently observing daylight saving time.
  • San Juan does not observe daylight saving time.

Frequently asked questions

Is San Juan ahead of or behind San Francisco?
San Juan is 3 hours ahead of San Francisco.
How many hours ahead of San Francisco is San Juan?
San Juan is 3 hours ahead of San Francisco.
What time is 9 AM in San Francisco in San Juan?
9:00 AM in San Francisco is 12:00 PM in San Juan.
What time is noon in San Francisco in San Juan?
12:00 PM in San Francisco is 3:00 PM in San Juan.
What time is 5 PM in San Francisco in San Juan?
5:00 PM in San Francisco is 8:00 PM in San Juan. Useful for end-of-day handoffs between the two offices.
What time is 3 PM in San Francisco in San Juan?
3:00 PM in San Francisco is 6:00 PM in San Juan.
Is San Francisco currently observing daylight saving time?
San Francisco is currently observing daylight saving time (summer time).
Is San Juan currently observing daylight saving time?
San Juan does not observe daylight saving time — its UTC offset stays the same all year.
Do San Francisco and San Juan observe daylight saving?
On November 1, 2026, San Francisco shifts for daylight saving. After that, San Juan will be 4 hours ahead of San Francisco (currently 3 hours ahead of San Francisco). The converter and the tables above always reflect the correct offset for the date you pick.
When is the best time to call San Juan from San Francisco?
Aim for 9 AM–2 PM in San Francisco, which is 12 PM–5 PM in San Juan.
When is the best time to call San Francisco from San Juan?
Aim for 12 PM–5 PM in San Juan, which is 9 AM–2 PM in San Francisco.
San Francisco (PDT) to San Juan (AST) — how do I convert quickly?
Add 3 hours to San Francisco local time to get San Juan local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.

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