Re: UTCNow <> GMT

The UK is in the GMT timezone. For part of the year the UK observes Daylight Saving.

The GMT timezone is UTC+0 (with a bias of +60 minutes for Daylight Saving).

When the UK enters Daylight Saving, it's timezone is NOT renamed. Instead, an alias of BST is used.

Here is New Zealand the timezone is NZST or New Zealand Standard Time (UTC+12) and the alias for daylight saving is NZDT or New Zealand Daylight Time (UTC+12 + another 60 minutes).

So you see, timezones are NOT renamed, we simply use an alternative monicker.

Also you need to reverse you thinking, because GMT is based on UTC and NOT the other way round.

Therefore:

GMT = UTC+0
BST = UTC+0 + another 60 minutes

By extrapolation GMT can never be UTC+1 or UTC+2.

Well, it is possible, but it would involve the UK land mass up and moving 15 degrees or more to the east. Somehow I don't think that's going to happen until the Earth get's hit by a very big object from outer space and, if that happened then what timezone we were in would be the least of our worries.



I meant for you to supply a reference as to how GMT+1 could in some cases be UTC+1 and in other cases be UTC+2. I do not see how this can be the case. The uk switches from GMT to BST and back again, but GMT itself and UTC remain static and (near enough) identical to one another. Is this not so?


"Rory Becker" <rorybecker@xxxxxxxxxxxxxxxx> wrote in message news:3af103471a1e58cab9a63690f914@xxxxxxxxxxxxxxxxxxxxx
Hello Göran,

I think we are outside the OP original point by now however.....

GMT is mostly used as a base for time zones, for example (GMT+1).
Depending on whether daylights savings time is active or not, this
can mean be (UTC+1) or (UTC+2).

Can you point to some reference from which you gather this...?

"Greenwich Mean Time (GMT) is a term originally referring to 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"

http://en.wikipedia.org/wiki/Gmt

I meant for you to supply a reference as to how GMT+1 could in some cases be UTC+1 and in other cases be UTC+2. I do not see how this can be the case. The uk switches from GMT to BST and back again, but GMT itself and UTC remain static and (near enough) identical to one another. Is this not so?

GMT+1 can never be the same as UTC+2.

Now that I reread what you wrote, I am not sure I interpreted what you said correctly. I'm fairly sure we agree. Sorry to anyone who might have become confused by what I have said :)
--
Rory



.

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