Time zone · Americas
PAT
Punta Arenas Time
Punta Arenas Time (PAT) covers Chile’s southernmost city, Punta Arenas, and a handful of nearby zones that stay on a steady UTC‑03:00 year‑round. Because this region sits so far south on the globe, you’ll notice dramatic swings in daylight—blazing summer sunsets after 11 p.m. and dark winter afternoons—yet the clocks never change, keeping scheduling simple when working with teams outside Chile’s mainland or across the Strait of Magellan.
Friday, June 5, 2026
Current offset
UTC-03:00
Standard · -03
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About PAT
A fixed, year-round offset.
Punta Arenas Time (PAT) covers Chile’s southernmost city, Punta Arenas, and a handful of nearby zones that stay on a steady UTC‑03:00 year‑round. Because this region sits so far south on the globe, you’ll notice dramatic swings in daylight—blazing summer sunsets after 11 p.m. and dark winter afternoons—yet the clocks never change, keeping scheduling simple when working with teams outside Chile’s mainland or across the Strait of Magellan.
IANA zones · the technical identifiers
The zone that resolve to PAT.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Where PAT is used
One country.
Same offset · UTC-03:00
Other zones at UTC-03:00 right now.
These named zones share PAT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about PAT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Is Punta Arenas Time the same as the rest of Chile?
- No. Mainland Chile uses Chile Time (CLT/CLST) with daylight saving changes, while Punta Arenas Time is fixed at UTC‑03:00 year‑round, slightly behind Santiago in winter and aligned with it in summer.
- Why does PAT never change its clocks?
- The region has opted out of daylight saving to keep a stable schedule. Since the city already enjoys extremely long summer days and short winter days due to its high latitude, shifting clocks offers little energy‑saving benefit.
- What’s unique about daylight in Punta Arenas?
- In summer, daylight can extend past 11 p.m., while in winter the sun may set as early as 4 p.m., giving residents huge seasonal differences in lifestyle and work patterns.
- How does PAT affect communication with global partners?
- Because it’s always UTC‑03:00, you can lock it in for Southern Cone business hours—early overlap with North American morning meetings and tight overlap with late‑day Europe or close coordination with Auckland and Sydney afternoons.
- Which cities use PAT?
- Primarily Punta Arenas and surrounding areas in Chile’s Magallanes region, including parts of the Strait of Magellan and Chilean Antarctica claims.
- Does PAT observe any seasonal time changes for special events?
- No. For consistency in shipping, air routes, and energy planning across the Strait of Magellan, Chile keeps PAT on a permanent standard time, avoiding confusion during migrations of seabirds and seasonal tourism peaks.
- Is PAT the southernmost time zone used in daily life?
- It’s one of the southernmost stable time zones. Further south, research stations often self‑select offsets, but PAT is the last truly official, populated time zone before you reach Antarctica’s flexible clocks.
- How does PAT relate to nearby Argentine time zones?
- Argentina may adjust its clocks or not, so the time difference with Buenos Aires can flip between 0 and 1 hour year‑round, but you can always fall back on PAT’s fixed UTC‑03:00 for flights and shipping.
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