Time zone · Americas
CLT
Chile Standard Time
Chile Standard Time (CLT) keeps Santiago and the rest of mainland Chile ticking at UTC-04:00, a sleek, winter-friendly offset that aligns business hours with much of the Americas while leaving evenings long and dark in the southern winter.
Friday, June 5, 2026
Current offset
UTC-04:00
Standard · -04
Daylight saving
Not active
Returns 6 Sept 2026
IANA zones
1
1 observe DST, 0 don't
DST offset
UTC-03:00
CLST · +1h
About CLT
Standard time, with a summer shift.
Chile Standard Time (CLT) keeps Santiago and the rest of mainland Chile ticking at UTC-04:00, a sleek, winter-friendly offset that aligns business hours with much of the Americas while leaving evenings long and dark in the southern winter.
DST schedule · CLT · CLST
2026 Sunday · clocks spring forward
Clocks spring forward by one hour · in 3 months.
One year, two clocks
IANA zones · the technical identifiers
The zone that resolve to CLT.
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.
Cities currently on CLT
The same hour, city by city.
3 cities · all UTC-04:00
Where CLT is used
One country.
Same offset · UTC-04:00
Other zones at UTC-04:00 right now.
These named zones share CLT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about CLT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Why is CLT set to UTC-04:00 instead of the more familiar UTC-03:00?
- Chile uses UTC-04:00 as its standard time, which shifts to UTC-03:00 during daylight saving months—effectively swapping winter evenings for brighter mornings nationwide.
- How does CLT's DST schedule compare to the Northern Hemisphere?
- Chile flips the script: its daylight saving period runs from roughly September to March, lining up with the Southern Hemisphere's longer summer days.
- Does all of Chile use CLT?
- Mainland Chile and its major cities like Santiago follow CLT; remote island territories may use other offsets or no daylight saving.
- Why does CLT change its name but not its hands?
- The clock shifts are subtle: during DST, locals may refer to 'Chile Summer Time' even if the zone code stays CLT, to mark the brighter evenings.
- What's the next clock change for CLT?
- CLT's next DST transition is scheduled for 2026-09-06, when clocks jump forward from UTC-04:00 to UTC-03:00.
- How should I schedule calls with Santiago during DST?
- Add an hour to usual CLT times from September through March—so 9 am CLT becomes 10 am 'Chile Summer Time' in the capital.
- Is CLT always UTC-04:00?
- No—only during non-DST months. The rest of the year, it runs at UTC-03:00.
- Why does Chile observe daylight saving at all?
- The policy aims to maximize daylight during social hours, aligning with longer Southern Hemisphere summer days and daily life.
- What's unique about CLT's DST flip?
- Chile often starts its DST around September 6th, earlier than some Southern Hemisphere nations, meaning clocks spring forward as winter eases in.
Free · Developer API
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