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America/Santiago time zone

9:57AMUTC−3

UTC−3UTC−3+2 h vs New York (you)

About America/Santiago

America/Santiago is the IANA time zone for most of Chile in Chile. It currently keeps UTC−4 in winter and UTC−3 in summer.

Its principal location is Santiago at 33.45° S, 70.67° W.

Rule for future years (POSIX TZ string)

<-04>4<-03>,M9.1.6/24,M4.1.6/24

The standard time is called “-04” (a numeric abbreviation) and is UTC−4. POSIX writes the offset with the opposite sign (west of Greenwich is positive), which is why the string says "4". Daylight saving time is called “-03” (a numeric abbreviation) and is UTC−3. It starts on the first Saturday of September at 24:00 and ends on the first Saturday of April at 24:00, local time. Software that has no full tzdata copy, such as many embedded devices, can use this string directly as the TZ environment variable.

Upcoming transitions

Computed from tzdata 2026f; local times are read on the clock just before each change.

History of America/Santiago since 1970

The record starts with local mean time (UTC−4:43), which ended on December 31, 1889. The first daylight saving time in the record is in 1927.

YearsClocksAbbreviations
1970–2014UTC−4 in winter, UTC−3 in summer—
2015UTC−3 all year—
2016 onwardUTC−4 in winter, UTC−3 in summer—

Before 1970

24 offset changes before 1970 in the record:

tzdata commits to accuracy from 1970 for every zone (zone1970.tab); earlier entries are historical research and may be incomplete.

Aliases and zones with the same clock

These older or country-specific IDs are links to America/Santiago in tzdata. Their pages redirect here: Chile/Continental.

Places on America/Santiago

Convert Santiago time

Tip: Alt+↑/↓ steps the time by 15 minutes (Shift: one hour). The link keeps the date, time and direction.

Using America/Santiago in code

Every major platform reads the same IANA ID. Store instants in UTC and convert with the ID at display time; never store a fixed offset for a place that has daylight saving time.

// JavaScript
new Date().toLocaleString('en-US', { timeZone: 'America/Santiago' })

# Python 3.9+
from zoneinfo import ZoneInfo
from datetime import datetime
datetime.now(ZoneInfo('America/Santiago'))

// Java
java.time.ZonedDateTime.now(java.time.ZoneId.of("America/Santiago"))

// Go
loc, _ := time.LoadLocation("America/Santiago")
time.Now().In(loc)

-- PostgreSQL
SELECT now() AT TIME ZONE 'America/Santiago';

# Shell
TZ='America/Santiago' date

Platforms ship their own copy of tzdata and update it on their own schedule. After a rule change, outputs can differ until the platform updates; this page uses tzdata 2026f.

Questions

What is the UTC offset of America/Santiago?
UTC−4 in winter and UTC−3 in summer (daylight saving time from the first Saturday of September at 12:00 PM to the first Saturday of April at 12:00 PM).
Does America/Santiago observe daylight saving time?
Yes: clocks move one hour forward on the first Saturday of September at 12:00 PM and back on the first Saturday of April at 12:00 PM.
Is Chile/Continental the same as America/Santiago?
Yes. Chile/Continental is a link (alias) to America/Santiago in tzdata and gives the same time since 1970. It remains a valid ID.
Which countries use America/Santiago?
Chile, according to zone1970.tab in tzdata.

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