Why ZULU time?
Guest
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I'm sure someone once told me that the phrase UTC replaced GMT as the international standard because the clocks which were/are used to 'set' international time were changed. I think some dodgy 50's technology 'Atomic' monstrosity at Greenwich was replaced by half a dozen microchips and a few wires in Paris. C'est la vie!
Guest
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GMT aka UTC aka ZULU. all the same.
"Greenwich MEAN Time". The "central Meridian"
THE line of Longitude. ALL clocks are set by it, hence GMT. Zulu was the Military/Civil ATC nomeclare. Alpha is "local" time. A few years ago, GMT was changed to UTC. At least the beggars couldn't move the Meridian
we aim to please, it keeps the cleaners happy
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chiglet
"Greenwich MEAN Time". The "central Meridian"
THE line of Longitude. ALL clocks are set by it, hence GMT. Zulu was the Military/Civil ATC nomeclare. Alpha is "local" time. A few years ago, GMT was changed to UTC. At least the beggars couldn't move the Meridian
we aim to please, it keeps the cleaners happy
------------------
chiglet
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India Time runs through the middle of Australia. India is in Echo Time, Echo Time.
There are 25 zones (no Juliet). Going East from Zulu they are A, B, C etc, going West they are N, O, P and so on. They meet at M/Y. The use of Alpha to mean local time is wrong, but widespread (probably coined by a journo). However since it is vacant, I propose that henceforth local time be referred to as Juliet
There are 25 zones (no Juliet). Going East from Zulu they are A, B, C etc, going West they are N, O, P and so on. They meet at M/Y. The use of Alpha to mean local time is wrong, but widespread (probably coined by a journo). However since it is vacant, I propose that henceforth local time be referred to as Juliet
Guest
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GMT was always measured by the Royal Observatory at Greenwich with a load of super accurate atomic clocks(although I think it is now physically in Cambridge.
Sometime in the 60's or 70's the French developed an even more super accurate atomic clock, and as their government were prepared to fund it, they became the timekeepers for us all. Obviuosly the name GMT had to go, so UTC was born - Universale Tempes Coordinatees.
However if you ask someone not involved in the aviation/maritime industtry what UTC is, they will probably tell you it is a type of long-life milk. GMT still rules among the great unwashed!!!!
Sometime in the 60's or 70's the French developed an even more super accurate atomic clock, and as their government were prepared to fund it, they became the timekeepers for us all. Obviuosly the name GMT had to go, so UTC was born - Universale Tempes Coordinatees.
However if you ask someone not involved in the aviation/maritime industtry what UTC is, they will probably tell you it is a type of long-life milk. GMT still rules among the great unwashed!!!!
Guest
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Chiglet,
In BST our watches are showing Alpha time. During winter our watches are shoing Zulu time. The time zones are constant, but UK local varies. That's why the ops room clock (always at zulu) varies compared to your watch.
On another tack, they say we have to change the clocks to suit the farmers. Why don't we use Alpha as local all year, which I think a lot of people would agree with. Those farmers with any animals left can get up at 4 instead of 5, and go to bed at 9 instead of 10. I don't insist the world gets an early night when I'm on earlies!!!
In BST our watches are showing Alpha time. During winter our watches are shoing Zulu time. The time zones are constant, but UK local varies. That's why the ops room clock (always at zulu) varies compared to your watch.
On another tack, they say we have to change the clocks to suit the farmers. Why don't we use Alpha as local all year, which I think a lot of people would agree with. Those farmers with any animals left can get up at 4 instead of 5, and go to bed at 9 instead of 10. I don't insist the world gets an early night when I'm on earlies!!!
Guest
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the man formerly known as....
Downunder has three timezones on the mainland during winter. West Oz is on 'H' (+8), South Oz and the Northern Territory are on 'IK' (+9.5 - hence halfway between India and Kilo), and the East Coast is on 'K' (+10).
When summer rocks around though, we get 5 timezones. The changes are that South Australia (but not the Northern Territory) goes to 'KL' (+10.5), and Tasmania, Victoria and New South Wales go to 'L' (+11).
It makes for fun cross country flying with multiple stops
(Of course, if you really want to be technical, we also have Cocos Island on 'FG' (+6.5), Christmas Island on 'G' (+7), and Norfolk Island on 'LM' (+11.5) - so I guess that makes 8 timezones as far as aviators are concerned)
Downunder has three timezones on the mainland during winter. West Oz is on 'H' (+8), South Oz and the Northern Territory are on 'IK' (+9.5 - hence halfway between India and Kilo), and the East Coast is on 'K' (+10).
When summer rocks around though, we get 5 timezones. The changes are that South Australia (but not the Northern Territory) goes to 'KL' (+10.5), and Tasmania, Victoria and New South Wales go to 'L' (+11).
It makes for fun cross country flying with multiple stops
(Of course, if you really want to be technical, we also have Cocos Island on 'FG' (+6.5), Christmas Island on 'G' (+7), and Norfolk Island on 'LM' (+11.5) - so I guess that makes 8 timezones as far as aviators are concerned)
