Daylight Saving Time / Standard Time --- changes coming

In about 10 days, the semi-annual silliness known as Daylight Saving Time will be upon us again.

On three dates, March 14, March 28, and April 4, various countries (or portions of countries) which are important to us as forex traders will go onto, or off of, Daylight Saving Time; while some other countries (or portions of countries) which do not observe Daylight Saving Time will just keep on doing what they’ve been doing.

Traders in every country around the globe will be affected by these changes — even traders in countries which do not participate in Daylight Saving Time.

It’s a mess, even for veteran traders who can figure time zones in their heads.

For newbies just getting familiar with this worldwide, 24-hour-per-day market, these time changes can be intimidating.

[B]Here’s the schedule:[/B]

Sunday, March 14 — U.S. and Canada go onto Daylight Saving Time

Sunday, March 28 — U.K., central Europe and Russia go onto Daylight Saving Time

Sunday, April 4 ------ New Zealand and s.e. Australia return to Standard Time, and Mexico goes onto Daylight Saving Time

If we take these changes a step at a time, I think we can cut through the confusion and make the next month fairly painless.

Towards the end of next week, I will post more detail regarding the time change occurring on March 14, and how that will affect trading times in the forex market for the following 2 weeks.

Then, two weeks later, we’ll detail the March 28 changes; and, finally, a week after that, we’ll detail the April 4 changes.
Then, we can forget about further time changes, until late September.

[B]A note about Europe.[/B] When forex traders refer to Europe, they are usually talking about the part of Europe which comprises the Central European Time zone (CET). That’s the region I referred to above as “central Europe”. This region happens to include the industrial and financial heart of Continental Europe, but it isn’t quite all of Europe.

Here is a list of the countries (and principalities) which comprise the Central European Time zone: Albania, Andorra, Austria, Belgium, Bosnia-Herzegovina, Croatia, Czech Republic, Denmark, France, Germany, Gibraltar, Hungary, Italy, Kosovo, Liechtenstein, Luxembourg, Macedonia, Malta, Monaco, Montenegro, Netherlands, Norway, Poland, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, and Vatican City.

[B]Countries and regions which do not observe Daylight Saving Time:[/B] a portion of Australia (see list below), Philippines, Japan, Korea, Singapore, Hong Kong, Taiwan, China, India, South Africa, Jamaica, a portion of the U.S., a portion of Canada, and a portion of Mexico (see lists below).

[B]The states which comprise southeastern Australia[/B] (these locations are currently on southern hemisphere Daylight Saving Time): New South Wales (Sydney), Australian Capital Territory (Canberra), Victoria (Melbourne), Tasmania (Hobart), and South Australia (Adelaide).

[B]The states in Australia which remain on standard time year-round:[/B] Queensland (Brisbane), Northern Territory (Darwin), and Western Australia (Perth).

[B]The portion of the United States which remains on standard time year-round: [/B] Arizona, Hawaii, and the U.S. Virgin Islands.

[B]The portion of Canada which remains on standard time year-round:[/B] a large portion of Saskatchewan, and small portions of British Columbia and Quebec.

[B]Mexico:[/B] Baja California goes onto DST on March 14; the state of Sonora remains on standard time year-round.

Reference: Upcoming Daylight Saving Time Clock Changes

More detail in a week.

Clint

On Sunday, March 14, the U.S. and Canada will go onto Daylight Saving Time.

This change will affect forex traders everywhere, as follows:

For traders in the U.S. and Canada (except in certain areas — see the Notes)

[ul]
[li]We will turn our clocks forward 1 hour on Saturday night or Sunday morning.
[/li]

[li]Beginning March 14, the Asian Session and the European Session will both begin and end ONE HOUR LATER than before.
[/li]

[li]The North American Session will begin and end at its customary times.
[/li][/ul]

For traders in all other parts of the world

[ul]
[li]Your clocks won’t change.
[/li]

[li]Beginning March 15, the North American Session will begin and end ONE HOUR EARLIER than before.
[/li]

[li]The Asian Session and the European Session will both begin and end at their customary times.
[/li][/ul]

Notes:

1. Not participating in the North American time change on March 14: Arizona, Hawaii, the U.S. Virgin Islands, and Puerto Rico;
parts of Saskatchewan, British Columbia and Quebec; and the Cayman Islands and Jamaica. These areas do not observe DST.
Traders in these areas will experience the same time changes as traders in Asia and Europe.

2. Baja California will go onto DST on March 14. All other states in Mexico will remain on standard time.

3. Off-shore: The Bermuda Islands and the Bahamas will go onto DST on March 14.

4. The changes outlined above will be in effect for 2 weeks, until March 28. Then, additional time changes will occur.

5. Seven time zones which will change on Sunday, March 14 (listed in order, from east to west):

[ul]
[li]Newfoundland and Labrador: NST (GMT-3.5) will change to NDT (GMT-2.5)
[/li]
[li]Nova Scotia (Halifax): AST (GMT-4) will change to ADT (GMT-3)
[/li]
[li]Eastern U.S. and Canada (New York, Toronto): EST (GMT-5) will change to EDT (GMT-4)
[/li]
[li]Central U.S. and Canada (Dallas, Winnipeg): CST (GMT-6) will change to CDT (GMT-5)
[/li]
[li]Mountain U.S. and Canada (Denver, Calgary): MST (GMT-7) will change to MDT (GMT-6)
[/li]
[li]Pacific U.S. and Canada (Los Angeles, Vancouver): PST (GMT-8) will change to PDT (GMT-7)
[/li]
[li]Alaska (Fairbanks): AKST (GMT-9) will change to AKDT (GMT-8)
[/li][/ul]
6. Time zones and GMT offsets verified at: timeanddate.com

[B]On Sunday, March 28, the U.K., Europe, and Russia will go onto Daylight Saving Time.[/B]

This change will affect forex traders everywhere, as follows:

[B]For traders in the U.K., Europe, and Russia[/B]

[ul]
[li]You will turn your clocks forward 1 hour on Saturday night or Sunday morning.
[/li]

[li]Beginning on March 28, the Asian Session and the North American Session will both begin and end ONE HOUR LATER
[/li]than before.

[li]The European Session (including Great Britain and Ireland) will begin and end at its previous times.
[/li][/ul]

[B]For traders in Asia, North America, and most other parts of the world[/B]

[ul]
[li]Your clocks will not change.
[/li]

[li]Beginning on March 28, the European Session (including Great Britain and Ireland) will begin and end ONE HOUR EARLIER than before.
[/li]

[li]The Asian Session and the North American Session will both begin and end at their previous times.
[/li][/ul]

[B]Notes:[/B]

[B]1. [/B]The March 28 time changes will return the U.S., Canada, the U.K., Europe, and Russia to the “normal” time relationships we use for almost all of the year — after 2 weeks of being out of sync.

Specifically, beginning Sunday, March 28, New York will, once again, be 5 hours behind London, 6 hours behind Frankfurt,
and 8 hours behind Moscow.

In terms of forex session times,

[ul]
[li]For traders in New York: Frankfurt will, once again, open at 2am EDT, and London will open at 3am EDT.
[/li]

[li]For traders in London: New York will, once again, open at 1pm BST.
[/li][/ul]
[B]2.[/B] Europe spans three time zones, all of which will change to DST on March 28: Eastern European Time (EET), Central European Time (CET) and Western European Time (WET). Most of the economic activity, and most of the forex trading activity, in Europe is concentrated in the countries of the Central European Time zone (scroll back to the previous post for details regarding central Europe).

[B]3.[/B] Great Britain and Ireland share the same GMT-offset as the Western European Time zone (WET), but they give it a different name. During northern hemisphere winter, the time zone is called GMT in Britain and Ireland, and WET in Portugal. During northern hemisphere summer, the time zone is called British Summer Time (BST) in Britain and Ireland, and Western Daylight Time (WDT) in Portugal. GMT = WET. And, BST = WDT = GMT+1.

[B]4.[/B] Russia spans 11 time zones, all of which will change to DST on March 28. Most of the economic activity, and forex trading activity, in Russia is concentrated in the Moscow/St Petersburg region (the MSK time zone).

[B]5.[/B] The 3 principal time zone changes which will occur on Sunday, March 28, (listed in order from east to west) are:

[ul]
[li]Russia (Moscow and St Petersburg): MSK (GMT+3) will change to [B]MDT (GMT+4)[/B]
[/li]

[li]Central Europe (Frankfurt, Paris, Zurich, etc.): CET (GMT+1) will change to[B] CEST (GMT+2)[/B]. CEST is Central European Summer Time.
[/li]

[li]U.K. (London): GMT will change to [B]BST (GMT+1)[/B]. BST is British Summer Time.
[/li][/ul]
Excluded from the list above: 10 eastern Russian time zones, plus the Eastern European and Western European time zones.

[B]6.[/B] Greenwich Mean Time (GMT) never changes. It is used as the worldwide reference time zone. It is sometimes referred to as Coordinated Universal Time (UTC). GMT = UTC. In note #4 above, instead of the wording used, it would be more accurate to say that the U.K. will go off of GMT, and go onto BST. GMT, as the reference time zone, will not change in any way.

On Sunday, April 4, New Zealand and a large portion of Australia will return to southern hemisphere Standard Time.

This will be the last major time change for the first half of 2010. When this one is behind us, we can forget about further time changes until late September.

This change will affect traders in New Zealand and Australia, and traders elsewhere who trade the early hours of the Asian Session, as follows:

For traders in New Zealand and s.e. Australia (see Note 1)

[ul]
[li]You will turn your clocks back 1 hour on Saturday night or Sunday morning.
[/li]

[li]Beginning on Sunday, April 4, the Japanese portion of the Asian Session, the European Session, and the North American Session will each begin and end ONE HOUR EARLIER than before.
[/li]

[li]The New Zealand/Australian portion of the Asian Session will begin and end at its previous times.
[/li][/ul]

For traders in the rest of Australia (see Note 2), and in most other parts of the world

[ul]
[li]Your clocks will not change.
[/li]

[li]The New Zealand/Australian portion of the Asian Session will begin and end ONE HOUR LATER than before.
[/li]

[li]The Japanese portion of the Asian Session, the European Session, and the North American Session will begin and end at their previous times.
[/li][/ul]

Notes:

1. In the list above, “s.e. Australia” refers to 5 states: New South Wales (Sydney), Australian Capital Territory (Canberra),
Victoria (Melbourne), Tasmania (Hobart), and South Australia (Adelaide).

2. In the list above, “the rest of Australia” refers to 3 states: Queensland (Brisbane), Northern Territory (Darwin), and
Western Australia (Perth).

3. On Sunday, April 4, all of Mexico (except Baja California, and Sonora) will go onto Daylight Saving Time. Baja California began DST on March 14, along with the U.S. and Canada. And Sonora remains on Standard Time year-round.

4. Four time zones will change on Sunday, April 4:

[ul]
[li]New Zealand: NZDT (GMT+13) will change to NZST (GMT+12)
[/li]
[li]Southeastern Australia: AEDT (GMT+11) will change to AEST (GMT+10)
[/li]
[li]Mexico: CST (GMT-6) will change to CDT (GMT-5), and MST (GMT-7) will change to MDT (GMT-6)
[/li][/ul]
5. Time changes and time zones verified at timeanddate.com

Clint,
You are doing a great job with this thread.

If anyone is interested they can type a place name into google and the word time and it will tell you the time in that location.

I found in my windows time zones there is more than one GMT.
One of them is called GMT Coordinated Universal time, I believe it is the same GMT as the UK uses when not in daylight saving time, I have found most forex websites when quoting GMT use this Co-Ordinated Universal time for instance I have seen some of the fundimentals news calender pages do this when quoting news release times.

I dont really care which timezone an event / release is said to be occurring at, as long as it states which zone it is eg local to the event, gmt or whatever.
I’m only going to have to convert it to / from my zone anyway:-}

There is only one GMT.

It is also referred to as UTC (Coordinated Universal Time), and as Zulu Time (used by the military and the aviation industry).

[B]GMT = UTC = Zulu Time[/B]

Check out — GMT: Greenwich Mean Time - World Time / Time in every Time Zone

I had always thought there was only 1 GMT too untill I saw the windows clock timezone settings, try it yourself go to windows time settings additional clocks, set one to GMT London set the other to GMT coordinated Universal time, there is an hour difference.

Edit: Maybe its because the UK is on summer time and windows time zones are still calling it GMT if thats the case Windows is wrong to be calling it GMT