Current Time in ChST
Chamorro Standard Time
About ChST Chamorro Standard Time
Used in Guam and the Northern Mariana Islands, which are US territories in the western Pacific Ocean. This time zone does not observe daylight saving time and is ten hours ahead of Coordinated Universal Time.
UTC Offset: +10:00
ChST at a glance
| Right now | 03:47 on Wednesday |
|---|---|
| UTC offset | UTC+10:00 (10 hours ahead of UTC) |
| Full name | Chamorro Standard Time |
| Countries | 2 |
| IANA zones | 2 |
What is ChST?
ChST is a time zone that is currently UTC+10:00 - that's 10 hours ahead of UTC. Its full name is Chamorro Standard Time. Right now the local time on ChST is 03:47. Today 2 countries (including Guam and Northern Mariana Islands) and 2 IANA database zones sit at this offset, which is why ChST is a useful shorthand even though the exact local rules differ from place to place.
How to convert ChST to UTC
For quick planning, use today's offset as a rule of thumb: 12:00 UTC = 22:00 local time, and 09:00 local time = 23:00 UTC. The live clock above is the safest reference when daylight saving or regional rules may apply.
Which countries use ChST?
ChST is used across Guam and Northern Mariana Islands. Open a country to see all of its cities and their local time.
IANA time zones in ChST
ChST maps to the IANA database zones Pacific/Guam and Pacific/Saipan. Each zone page shows its exact rules, including any daylight saving changes.
💡 Tip: Comparing times? ChST is 10 hours ahead of UTC. Use the IANA links and country links on this page when you need the exact local rule for a real place, not just the offset.
ChST - Frequently asked questions
What is ChST?
ChST is a time zone currently UTC+10:00 (10 hours ahead of UTC). Its full name is Chamorro Standard Time.
What is the UTC offset of ChST?
ChST is UTC+10:00 right now - 10 hours ahead of UTC.
Which countries are on ChST?
ChST is used in Guam and Northern Mariana Islands.
What time is it in ChST now?
The current time on ChST is 03:47 on Wednesday. The clock above updates every second.
How Alarm.now explains ChST
Abbreviation, offset, and IANA zones
ChST is shown as a time-zone group for Chamorro Standard Time with offset +10:00. The page links the abbreviation to the IANA zones and countries that use it, so users and search engines can distinguish a short label from an exact time-zone rule set.
When to use a specific IANA page
Use this group page for an overview of the abbreviation and offset. Use a linked IANA time-zone page when you need exact daylight-saving rules for a calendar, app, or future-date comparison.