CHOST to PST Converter

Updating current time…
CHOST
Choibalsan Summer Time
UTC+9
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CHOST is not used on this date
This converter keeps CHOST at UTC+9. Choibalsan uses CHOT (UTC+8) on this date. Open the CHOT converter, or choose Baruun Urt for city-specific time.
PDT/PST
Pacific Daylight Time
UTC−7
16h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 1.
Use PST all year (UTC−8)

Quick answers

Selected conversion

9:00 pm21:00 CHOST (UTC+9), Oct 18, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 18, 2026

CHOST is 16 hours ahead of PDT.

CHOST and PST (US winter time, UTC-8) examples

These examples always use CHOST (UTC+9) and PST (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

CHOST is 17 hours ahead of PST.

PST is US Pacific winter time (early November to mid-March). The rest of the year Los Angeles uses PDT (UTC-7), one hour later. For Pacific Time that follows daylight saving time, use CHOST to PT. For daylight-time examples, use CHOST to PDT.

How the time difference changes

For most of the year, CHOST is 16 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, CHOST is 17 hours ahead of PST.

For most of the year, working hours of 9:00 am to 6:00 pm in CHOST correspond to 5:00 pm (previous day) to 2:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CHOST correspond to 4:00 pm (previous day) to 1:00 am in PST.For most of the year, working hours of 09:00 to 18:00 in CHOST correspond to 17:00 (previous day) to 02:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in CHOST correspond to 16:00 (previous day) to 01:00 in PST.

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

Time Difference

Choibalsan Summer Time is 16 hours ahead of Pacific Daylight Time.
9:00 pm21:00 in CHOST is 5:00 am05:00 in PDT

CHOST to PDT call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in CHOST which corresponds to 5pm-6pm17:00-18:00 in PDT (previous day)

9:00 pm21:00 Choibalsan Summer Time (CHOST). Offset UTC +9:00 hours
5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours

9:00 pm21:00 CHOST / 5:00 am05:00 PDT

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
CHOSTPDT
8:00am previous day
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Choibalsan Summer Time

Offset: CHOST is 9 hours ahead of Greenwich Mean Time (GMT).

CHOST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for CHOST
  • I - short form of 'India'
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

Map of the areas on Pacific Standard Time (PST)
PST part of the year

Today the shaded areas are on UTC−7 (PDT).

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).

123456789101112End: Pacific Standard Time (PST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Pacific Standard Time (PST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT