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Time Difference: Hong Kong to San Diego

🇨🇳Hong KongUTC+8
vs
🇺🇸San DiegoUTC-8
🇨🇳
Hong Kong, China
Mon, Jul 13
🇺🇸
San Diego, US
Mon, Jul 13

Click a time to convert

Time Difference
15 hours
San Diego is 15 hours behind Hong Kong
Compare on map
🇨🇳
Hong Kong
View city page
🇺🇸
San Diego
View city page

Hong Kong vs San Diego timezone guide

Hong Kong (China) uses the Asia/Hong_Kong timezone at UTC+8, while San Diego (US) uses America/Los_Angeles at UTC-8. This means San Diego is 16 hours behind Hong Kong (based on standard offsets — the live difference above accounts for daylight saving time).

Best meeting times between Hong Kong and San Diego

Standard 9-to-5 working hours in Hong Kong and San Diego do not overlap. To meet synchronously, one side will need to start early or stay late — see the hour-by-hour planner below for the least disruptive options.

Hour-by-hour planner

Hong KongSan DiegoStatus
6am3pmOne side outside 9-to-5 but still awake
7am4pmOne side outside 9-to-5 but still awake
8am5pmHong Kong early, San Diego evening
9am6pmOne side outside 9-to-5 but still awake
10am7pmOne side outside 9-to-5 but still awake
11am8pmOne side outside 9-to-5 but still awake
12pm9pmOne side outside 9-to-5 but still awake
1pm10pmHong Kong working hours, San Diego late evening
2pm11pmHong Kong working hours, San Diego late evening
3pm12amHong Kong working hours, San Diego asleep
4pm1amHong Kong working hours, San Diego asleep
5pm2amHong Kong evening, San Diego asleep
6pm3amHong Kong evening, San Diego asleep
7pm4amHong Kong evening, San Diego asleep
8pm5amHong Kong evening, San Diego asleep
9pm6amHong Kong evening, San Diego early
10pm7amHong Kong late evening, San Diego early

Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.

Daylight saving time between Hong Kong and San Diego

San Diego observes daylight saving time, but Hong Kong does not. That means the difference between the two cities changes seasonally — by one hour, around San Diego's transition dates.

  • Jan 1 → Mar 8Hong Kong is 16 hours ahead San Diego
  • Mar 8 → Nov 1Hong Kong is 15 hours ahead San Diego
  • Nov 1 → Jan 1Hong Kong is 16 hours ahead San Diego

Distance between Hong Kong and San Diego

Great-circle distance
11,823 km
Direct flight time
~14h 55m

Hong Kong and San Diego are 11,823 km apart along the great-circle route. A direct flight takes roughly ~14h 55m, depending on aircraft type, winds, and routing.

More comparisons

Hong Kong to New YorkHong Kong to LondonHong Kong to TokyoHong Kong to SydneySan Diego to New YorkSan Diego to LondonSan Diego to TokyoSan Diego to Sydney

Frequently asked questions

What is the time difference between Hong Kong and San Diego?
The current time difference is 15 hours. Hong Kong is currently 15 hours ahead of San Diego.
Is Hong Kong ahead of San Diego?
Yes. Hong Kong is currently 15 hours ahead of San Diego.
What time is it in San Diego when it's 9 AM in Hong Kong?
When it's 9 AM in Hong Kong, it's 6pm in San Diego.
When is the best time to schedule a meeting between Hong Kong and San Diego?
Standard 9-to-5 working hours in Hong Kong and San Diego do not overlap. To meet synchronously, one side will need to start before 9 AM or work past 5 PM — see the planner above for the least disruptive options.
Do Hong Kong and San Diego observe daylight saving time?
San Diego observes daylight saving time, but Hong Kong does not — the difference between the two cities changes by one hour around the DST transition dates.
How far apart are Hong Kong and San Diego?
Hong Kong and San Diego are 11,823 km apart along the great-circle route. A direct flight takes roughly 14 hours 55 minutes.