Daylight saving

[EHM-1001 Robert]

AS you may know today we changed the hours +1 hour in countries that uses the Daylight Saving Time. It means that ZULU time is GMT-1 until autumn. As I know, Korea for example do not use daylight saving time, so GMT is always the same as ZULU there.

[EHM-1358 Tim]

I always thought it was GMT+1?

[EHM-0001 Gergely]

yes, so in Eastern Europe, local time = UTC+2 hours... please be careful e.g. when reporting IVAO pireps.

Gergely

[EHM-1703 Philip]

I may well be wrong on this but as I remember it from school, GMT & Zulu time are never different! In the UK we're now on DST (formerly BST or British Summer Time or GMT +1) not GMT. Officially GMT does not exist anymore, it was replaced with UTC in the early 1970's when they switched from a Celestial clock to an Atomic Clock. As far as the Greenwich Observatory is concerned GMT, UTC and Zulu are all the same time, all of the time and never change. As I said, this was how I remember being taught at school so I may well be wrong, I am sure somebody who has attended a school recently may be able to correct me if I am wrong! (It was 20 years ago that I was at school )

[EHM-1001 Robert]

Doh I may be wrong, but as I know that ZULU is a military standard, therefore it is not use the daylight saving time. So in this period of the year GMT has 1 hour advantage on ZULU :s

I think this is the time when I need to look after it in Google

[EHM-0654 Murray]

Not quite Robert...

UTC (the Internationally agreed time standard) = GMT (the historical time standard) = ZULU (the aviation time standard)

They're all the same, and none of them differs from the others. DST is the differentiation from UTC/GMT/Z (+1 in summer time) and as Gergely points out, isn't globally adopted.

[EHM-1001 Robert]

Ok then. I just remember a flyin when it had difficulties because of timezones and time standards. I am sorry for missunderstanding.