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Guwahati, India to AST

Guwahati
India
IST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AST
Atlantic Standard Time
GMT -4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

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

Time Difference

IST (India Standard Time) is 9 hours and 30 minutes ahead of Atlantic Standard Time
5:30 pm17:30 in Guwahati, India is 8:00 am08:00 in AST

Guwahati to AST call time
Best time for a conference call or a meeting is between 5:30pm-6:30pm in Guwahati which corresponds to 8am-9am in AST

5:30 pm17:30 IST (India Standard Time) (Guwahati, India). Offset UTC +5:30 hours
8:00 am08:00 Atlantic Standard Time (AST). Offset UTC -4:00 hours

5:30 pm17:30 Guwahati, India / 8:00 am08:00 AST

Guwahati, IndiaAST
12am (midnight)2:30 pm
1am3:30 pm
2am4:30 pm
3am5:30 pm
4am6:30 pm
5am7:30 pm
6am8:30 pm
7am9:30 pm
8am10:30 pm
9am11:30 pm
10am12:30 am
11am1:30 am
12pm (noon)2:30 am
1pm3:30 am
2pm4:30 am
3pm5:30 am
4pm6:30 am
5pm7:30 am
6pm8:30 am
7pm9:30 am
8pm10:30 am
9pm11:30 am
10pm12:30 pm
11pm1:30 pm
00:0014:30
01:0015:30
02:0016:30
03:0017:30
04:0018:30
05:0019:30
06:0020:30
07:0021:30
08:0022:30
09:0023:30
10:0000:30
11:0001:30
12:0002:30
13:0003:30
14:0004:30
15:0005:30
16:0006:30
17:0007:30
18:0008:30
19:0009:30
20:0010:30
21:0011:30
22:0012:30
23:0013:30

Guwahati Information

Time Zone

Abbreviation / Name
IST - India Standard Time
UTC / GMT Offset
+5:30 hours during India Standard Time, currently in use.

Guwahati Facts

Country
India
Alternative Names
GAU, Gauhati, Gauháti, Gauhāti, Gaukhati, Guvahati, Guvahatis, Guvakhati, Guwahati, gauhati, gu wa ha ti, gu'ahati, guhati, guraahati, guvahati, guvahatti, guwahati, guyahati, gwahty, gwaty, gwwaہaty, jwahaty, kuvahatti, kuvakatti, Гаухати, Гувахати, Ґувахаті, جواهاتي, گواتی, گواهتي, گوواہاتی, گوہاٹی, गुवहाटी, गुवाहाटी, গুয়াহাটি, গুৱাহাটি, গুৱাহাটী, ਗੁਹਾਟੀ, ગુવાહાટી, ଗୁଆହାଟୀ, குவகாத்தி, குவஹாத்தி, గౌహతి, ಗುವಾಹಾಟಿ, ഗുവഹാത്തി, グワハティ, グワーハーティー, 古瓦哈提, 구와하티
Population
899,094
Currency
Rupee (INR)
Geographic Coordinates
26° 11' N Latitude / 91° 44' E Longitude
International Dialing Code
+91

Atlantic Standard Time

Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Antigua & Barbuda, Anguilla, Aruba, Barbados, St Barthelemy, Bermuda, Caribbean NL, Canada, Curaçao, Dominica, Dominican Republic, Grenada, Greenland, Guadeloupe, St Kitts & Nevis, St Lucia, St Martin (French), Martinique, Montserrat, Puerto Rico, St Maarten (Dutch), Trinidad & Tobago, St Vincent, Virgin Islands (UK), Virgin Islands (US)

Principal Cities: The largest city in the AST time zone is Santo Domingo in Dominican Republic, with about 2.202 million people. Other major cities in this time zone include Santiago de los Caballeros, Santo Domingo Oeste, San Juan, Halifax.

French: HNA - Heure Normale de l'Atlantique

Spanish: AST - Tiempo Estándar del Atlántico

AST Time Zone Geo Map
AST timezone map

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

Daylight saving time clock moves back for one hour from 2am to 1amStart: Atlantic Standard Time (AST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Atlantic Standard Time (AST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.

AST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Quebec - Military abbreviation for AST
  • Q - short form of 'Quebec'
IANA/Olson: Reflects AST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Anguilla
  • America/Antigua
  • America/Aruba
  • America/Barbados
  • America/Blanc-Sablon
  • America/Curacao
  • America/Dominica
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Grenada
  • America/Guadeloupe
  • America/Halifax
  • America/Kralendijk
  • America/Lower_Princes
  • America/Marigot
  • America/Martinique
  • America/Moncton
  • America/Montserrat
  • America/Port_of_Spain
  • America/Puerto_Rico
  • America/Santo_Domingo
  • America/St_Barthelemy
  • America/St_Kitts
  • America/St_Lucia
  • America/St_Thomas
  • America/St_Vincent
  • America/Thule
  • America/Tortola
  • America/Virgin
  • Atlantic/Bermuda
  • Canada/Atlantic
AST Abbreviation: Several time zones share AST abbreviation and it could refer to these time zones
  • Atlantic Standard Time - UTC -4
  • Arabia Standard Time - UTC +3
Time zones with the GMT -4 offset:
  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT