Updating current time…
CLST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
R
UTC−5
2h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:00 am09:00 CLST (UTC-3), Oct 20, 2026 = 7:00 am07:00 R (UTC-5), Oct 20, 2026

CLST is 2 hours ahead of R.

CLST and R examples

These examples always use CLST (UTC-3) and R (UTC-5). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

CLST is 2 hours ahead of R.

How the time difference changes

For most of the year, CLST is 2 hours ahead of R. From Apr 4 to Sep 5, 2027, CLT is 1 hour ahead of R.

For most of the year, working hours of 9:00 am to 6:00 pm in CLST correspond to 7:00 am to 4:00 pm in R. At other times of the year, working hours of 9:00 am to 6:00 pm in CLT correspond to 8:00 am to 5:00 pm in R.For most of the year, working hours of 09:00 to 18:00 in CLST correspond to 07:00 to 16:00 in R. At other times of the year, working hours of 09:00 to 18:00 in CLT correspond to 08:00 to 17:00 in R.

Compare CLST time with R time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Chile Summer Time is 2 hours ahead of Romeo Time Zone.
9:00 am09:00 in CLST is 7:00 am07:00 in R

CLST to R call time
Best time for a conference call or a meeting is between 11am-6pm11:00-18:00 in CLST which corresponds to 9am-4pm09:00-16:00 in R

9:00 am09:00 Chile Summer Time (CLST). Offset UTC -3:00 hours
7:00 am07:00 Romeo Time Zone (R). Offset UTC -5:00 hours

9:00 am09:00 CLST / 7:00 am07:00 R

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
CLSTR
10:00pm previous day
11:00pm previous day
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22:00 previous day
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Chile Summer Time

Offset: CLST is 3 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Chile

Principal Cities: The largest city in the CLST time zone is Santiago in Chile, with about 4.837 million people. Other major cities in this time zone include Antofagasta, Viña del Mar, Valparaíso, Puerto Montt.

Map of the areas on Chile Summer Time (CLST)
CLST part of the year

Today all shaded areas are on CLST.

Daylight Saving: Chile Summer Time (CLST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Chile Standard Time (CLT).

123456789101112Start: Chile Summer Time (CLST) started on Sunday, September 6, 2026 at 12:00 am00:00 local time and clocks were set one hour forward to Sunday, September 6, 2026, 1:00 am01:00.

123456789101112End: Chile Summer Time (CLST) ends on Sunday, April 4, 2027 at 12:00 am00:00 local time and clocks are set one hour back to Saturday, April 3, 2027, 11:00 pm23:00 local standard time instead.

See Chile daylight saving time and upcoming clock changes worldwide.

CLST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for CLST
  • P - short form of 'Papa'
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasilia Time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • FKT - Falkland Islands Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • PYT - Paraguay Time
  • SRT - Suriname Time
  • UYT - Uruguay Time

Romeo Time Zone

Offset: R is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Brazil, Canada, Cayman Islands, Chile, Colombia, Cuba, Ecuador, Haiti, Jamaica, Mexico, Panama, Peru, Turks and Caicos Islands, United States

Principal Cities: The largest city in the R time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Lima, Bogotá, Toronto, Quito.

Daylight Saving: Some places on Romeo Time Zone (R) keep the same time all year, while others use R for only part of the year and change their clocks for daylight saving time; see upcoming clock changes worldwide.

Map of the areas on Romeo Time Zone (R)
R all year R part of the year

Today some of the lighter areas are on UTC−4 (Cuba Daylight Time, EDT).

R representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for R
  • R - short form of 'Romeo'
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone