What time is it in area code 520?
Area code 520 is in the Mountain time zone: UTC−7 all year, because Arizona does not change its clocks. It stays on MST (UTC−7) through the year, so the gap to places that do change their clocks shifts by an hour twice a year. When it is 9 am in 520, it is 11 am Eastern, 10 am Central and 8 am Pacific – so a call in business hours here arrives later in the day on the east coast. The code's largest rate centers are TUCSON, SIERRAVIST and CASAGRANDE, as NANPA abbreviates them. Other codes keeping the same time in Arizona: 480, 602, 623 and 928.
Clocks run in your browser from the IANA time zone database, so they stay right between page rebuilds.
Offsets and clock changes
| Zone | Standard | Daylight saving | Changes in 2026 |
|---|---|---|---|
| Mountain | MST UTC−7 | not observed | none |
Other Arizona codes on the same clock
Questions about 520 and time
What time is it in area code 520?
The clock above shows it live. 520 keeps Mountain time, UTC−7 in winter and the same all year.
Does area code 520 observe daylight saving time?
No. Arizona stays on MST all year.
Is 520 the same time as New York?
No. New York is Eastern time; 520 is Mountain (UTC−7 against UTC in winter), so work out the difference from the clock above rather than assuming.
Why does a 520 caller reach me at an odd hour?
Two common reasons. Either the clocks differ by more than you expected – the offset changes twice a year and not everywhere on the same date – or the caller ID is not really 520 at all. Spam callers fake a local-looking number, so the displayed code says nothing about where the call came from.
Sources
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- IANA Time Zone Database (tzdata), as shipped with this build, retrieved Nov 1, 2026
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