Greenwich Mean Time (GMT)
Greenwich Mean Time (UTC+0)
The Greenwich Mean Time (GMT) is a unit of timezones used in scientific, engineering, and practical contexts. Unit standardization in the field of timezones has evolved over centuries as international scientific bodies and engineering organizations developed consistent measurement frameworks. The International System of Units (SI) provides the modern foundation for most technical measurements, though legacy units from national and industrial traditions continue to be used alongside SI units in many fields. The Greenwich Mean Time is precisely defined to ensure consistent, reproducible measurements across laboratories and industries worldwide.
Accurate timezones measurement is critical in engineering, science, commerce, and everyday life. Using the correct unit and applying conversions precisely prevents errors that can be costly or dangerous in professional applications.
Conversions Involving Greenwich Mean Time
Hawaii Standard Time → Greenwich Mean Time
HST → GMT
Alaska Standard Time → Greenwich Mean Time
AKST → GMT
Pacific Standard Time → Greenwich Mean Time
PST → GMT
Pacific Daylight Time → Greenwich Mean Time
PDT → GMT
Mountain Standard Time → Greenwich Mean Time
MST → GMT
Mountain Daylight Time → Greenwich Mean Time
MDT → GMT
Central Standard Time → Greenwich Mean Time
CST → GMT
Central Daylight Time → Greenwich Mean Time
CDT → GMT
Eastern Standard Time → Greenwich Mean Time
EST → GMT
Eastern Daylight Time → Greenwich Mean Time
EDT → GMT
Atlantic Standard Time → Greenwich Mean Time
AST → GMT
Newfoundland Standard Time → Greenwich Mean Time
NST → GMT
Brasília Time → Greenwich Mean Time
BRT → GMT
Argentina Time → Greenwich Mean Time
ART → GMT
Uruguay Time → Greenwich Mean Time
UYT → GMT
Chile Standard Time → Greenwich Mean Time
CLT → GMT
Venezuela Time → Greenwich Mean Time
VET → GMT
Colombia Time → Greenwich Mean Time
COT → GMT
Peru Time → Greenwich Mean Time
PET → GMT
Greenwich Mean Time → Hawaii Standard Time
GMT → HST
Greenwich Mean Time → Alaska Standard Time
GMT → AKST
Greenwich Mean Time → Pacific Standard Time
GMT → PST
Greenwich Mean Time → Pacific Daylight Time
GMT → PDT
Greenwich Mean Time → Mountain Standard Time
GMT → MST
Greenwich Mean Time → Mountain Daylight Time
GMT → MDT
Greenwich Mean Time → Central Standard Time
GMT → CST
Greenwich Mean Time → Central Daylight Time
GMT → CDT
Greenwich Mean Time → Eastern Standard Time
GMT → EST
Greenwich Mean Time → Eastern Daylight Time
GMT → EDT
Greenwich Mean Time → Atlantic Standard Time
GMT → AST
Greenwich Mean Time → Newfoundland Standard Time
GMT → NST
Greenwich Mean Time → Brasília Time
GMT → BRT
Greenwich Mean Time → Argentina Time
GMT → ART
Greenwich Mean Time → Uruguay Time
GMT → UYT
Greenwich Mean Time → Chile Standard Time
GMT → CLT
Greenwich Mean Time → Venezuela Time
GMT → VET
Greenwich Mean Time → Colombia Time
GMT → COT
Greenwich Mean Time → Peru Time
GMT → PET
Greenwich Mean Time → Coordinated Universal Time
GMT → UTC
Greenwich Mean Time → Western European Time
GMT → WET
Greenwich Mean Time → Central European Time
GMT → CET
Greenwich Mean Time → Central European Summer Time
GMT → CEST
Greenwich Mean Time → Eastern European Time
GMT → EET
Greenwich Mean Time → Eastern European Summer Time
GMT → EEST
Greenwich Mean Time → West Africa Time
GMT → WAT
Greenwich Mean Time → Central Africa Time
GMT → CAT
Greenwich Mean Time → East Africa Time
GMT → EAT
Greenwich Mean Time → Moscow Standard Time
GMT → MSK
Greenwich Mean Time → Iran Standard Time
GMT → IRST
Greenwich Mean Time → Gulf Standard Time
GMT → GST
Greenwich Mean Time → India Standard Time
GMT → IST
Greenwich Mean Time → Nepal Time
GMT → NPT
Greenwich Mean Time → Bangladesh Standard Time
GMT → BST
Greenwich Mean Time → Myanmar Standard Time
GMT → MMT
Greenwich Mean Time → Indochina Time
GMT → ICT
Greenwich Mean Time → Western Indonesian Time
GMT → WIB
Greenwich Mean Time → China Standard Time
GMT → CST
Greenwich Mean Time → Singapore Time
GMT → SGT
Greenwich Mean Time → Hong Kong Time
GMT → HKT
Greenwich Mean Time → Philippine Time
GMT → PHT
Common Uses of the Greenwich Mean Time
- •Scientific research — expressing timezones values in published studies and experimental data
- •Engineering design — specifying timezones requirements in technical drawings and calculations
- •Quality control — measuring and verifying timezones in manufactured products
- •Education — teaching timezones concepts in physics and engineering courses
- •Industry standards — meeting regulatory and specification requirements for timezones
Did You Know?
The International Bureau of Weights and Measures (BIPM) in Sèvres, France, is the custodian of the International System of Units (SI). The BIPM coordinates global measurement science and maintains the definitions of base units that underpin all scientific and industrial measurement. The Greenwich Mean Time is part of this global measurement framework that ensures a scientific result in one country means exactly the same thing when replicated in another. This traceability is essential in fields from pharmaceutical manufacturing to aerospace engineering where measurement errors can have serious consequences.