HST to SGT Time Converter - Live World Clock

Convert time between Hawaii Standard Time (HST) and Singapore Time (SGT). See current time with live clocks.

United States (HST)

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07:27:45 AM
Thursday, August 20, 2026

Singapore (SGT)

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01:27:45 AM
Friday, August 21, 2026

Current Time Difference

HST is -18 hours behind SGT

What is HST (Hawaii Standard Time)?

Hawaii Standard Time (HST) used in Hawaii, UTC-10:00. No DST observed.

Countries and Regions Using HST

Primary Country:

  • United States
  • States: Hawaii

Key Facts about HST:

  • ✓ No Daylight Saving Time
  • ✓ Major tourism destination
  • ✓ Pacific island timezone
  • ✓ Major Cities: Honolulu, Pearl City, Hilo
  • ✓ UTC Offset: -10:00

What is SGT (Singapore Time)?

Singapore Time (SGT) used in Singapore and parts of Southeast Asia, UTC+8:00.

Countries and Regions Using SGT

Primary Country:

  • Singapore

Also Used By:

  • Malaysia
  • Philippines

Key Facts about SGT:

  • ✓ Major financial center
  • ✓ Tech hub
  • ✓ No DST observed
  • ✓ Major Cities: Singapore
  • ✓ UTC Offset: +8:00

HST to SGT Time Difference

Standard Time Difference:

HST is -18 hours behind

Common Use Cases:

  • • Business meetings between United States and Singapore
  • • International collaboration across timezones
  • • Scheduling calls and conferences

Frequently Asked Questions

Which countries are in HST time zone?

United States is the primary country using HST (-10:00).

Which countries are in SGT time zone?

Singapore is the primary country using SGT (+8:00). Other countries include: Malaysia, Philippines.

How many hours is HST ahead of SGT?

HST is -18 hours behind SGT.

Does United States observe Daylight Saving Time?

No, United States does not observe Daylight Saving Time. HST remains -10:00 throughout the year.