AEST to GMT to EST to IST to Sao Paulo Time Converter

Time Difference

Australian Eastern Standard Time is 10 hours ahead of Greenwich Mean Time. Australian Eastern Standard Time is 15 hours ahead of Eastern Standard Time. Australian Eastern Standard Time is 4 hours and 30 minutes ahead of India Standard Time. Australian Eastern Standard Time is 13 hours ahead of BRT (Brasilia Time).
10:00 pm22:00 in AEST is 12:00 pm12:00 in GMT and is 7:00 am07:00 in EST and is 5:30 pm17:30 in IST and is 9:00 am09:00 in Sao Paulo, Brazil

AEST to GMT call time
Best time for a conference call or a meeting is between 6pm-7pm18:00-19:00 in AEST which corresponds to 8am-9am08:00-09:00 in GMT. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
AEST to EST call time
Best time for a conference call or a meeting is between 8:30am-9:30am08:30-09:30 in AEST which corresponds to 5:30pm-6:30pm17:30-18:30 in EST (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
AEST to IST call time
Best time for a conference call or a meeting is between 1:30pm-6pm13:30-18:00 in AEST which corresponds to 9am-1:30pm09:00-13:30 in IST
AEST to São Paulo call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in AEST which corresponds to 6:30pm-7:30pm18:30-19:30 in São Paulo (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

10:00 pm22:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 am09:00 BRT (Brasilia Time) (Sao Paulo, Brazil). Offset UTC -3:00 hours

10:00 pm22:00 AEST / 12:00 pm12:00 GMT / 7:00 am07:00 EST / 5:30 pm17:30 IST / 9:00 am09:00 Sao Paulo, Brazil

Australian Eastern Standard Time

Offset: AEST is 10 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Australia

Principal Cities: The largest city in the AEST time zone is Sydney in Australia, with about 5.639 million people. Other major cities in this time zone include Melbourne, Brisbane, Gold Coast, Newcastle.

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

End: Australian Eastern Standard Time (AEST) ended on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the first Sunday of October.

Start: Australian Eastern Standard Time (AEST) starts on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

See Australia daylight saving time and upcoming clock changes worldwide.

Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra

Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.

AEST representations, usage and related time zones

Greenwich Mean Time

Offset: GMT is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the GMT time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.

GMT representations, usage and related time zones

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

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

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

End: Eastern Standard Time (EST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

EST representations, usage and related time zones

India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bengaluru, Hyderabad, Ahmedabad.

Daylight Saving: Clocks in India Standard Time (IST) do not change for daylight saving time, so IST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Current time in India: India time now

IST representations, usage and related time zones