That depends on whether or not Sydney is on Daylight Saving Time. Assuming you are referring to 11:11 AM UTC on 21 December 2012, that is 10:11 PM of the same day in Sydney.
Montreal
During December, when the time in Sydney is 9 PM AEDT, the time in London is 10 AM GMT.
Wednesday, September 21, 2011 at 8:29:45 AM
Sydney is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. California is (Greenwich Mean Time) GMT -8 hours, ie. 8 hours behind Greenwich, England. Los Angeles is 18 hours behind Sydney. (Daylight savings not taken into account.)
New Zealand is (Greenwich Mean Time) GMT +12 hours, ie. 12 hours ahead of Greenwich, England. Melbourne is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. If it is 2pm in Melbourne, it is 4pm in Wellington.
France is (Greenwich Mean Time) GMT +1 hours, ie. 1 hours ahead of Greenwich, England. Sydney is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Sydney is 9 hours ahead of France. (Daylight savings not taken into account.)
During December, when the time in Sydney is 9 PM AEDT, the time in London is 10 AM GMT.
Sydney is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England.
Wednesday, September 21, 2011 at 8:29:45 AM
At present, in the month of February, England is in the time zone GMT (0) and Melbourne, Australia is in the time zone of GMT + 10 (Daylight Saving Time, which adds another hour difference since it is currently summer there). So if it is 11:00 am in England it would now be 10:00 pm in Melbourne.
Sydney is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. California is (Greenwich Mean Time) GMT -8 hours, ie. 8 hours behind Greenwich, England. Los Angeles is 18 hours behind Sydney. (Daylight savings not taken into account.)
17:00 New York time Sunday (GMT - 5)22:00 GMT time Sunday08:00 Sydney, Australia time, Monday (GMT + 10)Most of the time, forex market hours are quoted in New York City time (USA, EST, GMT -5) or GMT time (GMT +0, military 'zulu') time. So whenever you tell someone the time when referring to forex, you should include a reference to the time zone.
12.00
New Zealand is (Greenwich Mean Time) GMT +12 hours, ie. 12 hours ahead of Greenwich, England. Melbourne is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. If it is 2pm in Melbourne, it is 4pm in Wellington.
There are three different answers depending on the time of year.From 16:00 UTC on the day before the first Sunday of April until 16:00 UTC on the day before the first Sunday of October, when Sydney is on Standard Time, Sydney is nine hours ahead of Scotland.From 01:00 on the last Sunday of October until 01:00 on the last Sunday of March, when Scotland is on Standard Time, Sydney is eleven hours ahead of Scotland.During the rest of the year, when both Sydney and Scotland are on Summer Time (a.k.a. Daylight Saving Time), the time difference is ten hours.12:00 GMT (in Scotland Oct-Mar) =13:00 BST (in Scotland Mar-Oct) =22:00 AEST (in Sydney Apr-Oct) =23:00 AEDT (in Sydney Oct-Apr)
France is (Greenwich Mean Time) GMT +1 hours, ie. 1 hours ahead of Greenwich, England. Sydney is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Sydney is 9 hours ahead of France. (Daylight savings not taken into account.)
It is 1:00 am yesterday in the United States
GMT is the timezone in London, England. All other time zones are described relative to GMT. For example, New York is GMT - 5 hours. Los Angeles is GMT - 8 hours. Standard time is how we set our clocks when we are NOT observing Daylight Saving Time. Daylight Saving Time reduces the time-difference between your timezone and GMT by 1 hour. For example, When NYC observes DST, the timezone in NYC becomes GMT-4 (instead of the normal GMT-5)