Arizona to China: Always Exactly 15 Hours
China is 15 hours ahead of Arizona, every day of the year. All of China runs on a single time zone — China Standard Time (UTC+8) — and hasn't observed daylight saving time since 1991. Arizona holds still at MST (UTC−7). Two fixed clocks means a fixed gap: a schedule agreed once works in January and July alike.
One China-specific wrinkle: because the whole country shares Beijing's clock, "9:00 AM in China" means very different daylight in Shanghai than in Ürümqi, 3,000 km west. Business hours in the far west often run later in clock terms (10:00 AM–7:00 PM is common). For coastal partners — Shanghai, Shenzhen, Beijing — the standard 9-to-6 applies.
The Quick Rule
Add 15 hours — or in practice: add 3 hours and jump to the next day's opposite half. 5:00 PM Monday in Phoenix is 8:00 AM Tuesday in Shanghai.
Conversion Table
| Arizona (MST) | China (same/next day) |
|---|---|
| 6:00 AM | 9:00 PM, same day |
| 7:00 AM | 10:00 PM, same day |
| 8:00 AM | 11:00 PM, same day |
| Noon | 3:00 AM, next day |
| 3:00 PM | 6:00 AM, next day |
| 4:00 PM | 7:00 AM, next day |
| 5:00 PM | 8:00 AM, next day |
| 6:00 PM | 9:00 AM, next day |
| 7:00 PM | 10:00 AM, next day |
Best Meeting Windows
- Arizona late afternoon (4:00–7:00 PM) = China morning (7:00–10:00 AM, next day). The standard recurring-meeting slot for this corridor.
- Arizona early morning (6:00–8:00 AM) = China evening (9:00–11:00 PM). Usable when the China side prefers their evening; common with factory managers wrapping up the day.
- There is no same-workday overlap — noon in Phoenix is 3:00 AM in Shanghai.
Watch the calendar day: Arizona's Monday afternoon is China's Tuesday morning, and Chinese public holidays (Golden Week in early October, Spring Festival) shift or close entire business weeks — always confirm dates around them.
The home page shows China and Arizona side by side live, including each side's current day of the week, and the converter handles any specific time.