flying dog Posted July 22, 2012 Share Posted July 22, 2012 Sorry folks, I've tried the interweb but can't understand what is said. In as simple a English as possible, what is the way to know when DLS starts and ends? I believe it is the first sat/sun of October to start and the First sat/sun of ...... April? I am wanting to try and get a "formula" so my new clock can auto adjust for DLS in Sydney. Link to comment Share on other sites More sharing options...
skyfox1 Posted July 22, 2012 Share Posted July 22, 2012 Sorry folks, I've tried the interweb but can't understand what is said.In as simple a English as possible, what is the way to know when DLS starts and ends? I believe it is the first sat/sun of October to start and the First sat/sun of ...... April? I am wanting to try and get a "formula" so my new clock can auto adjust for DLS in Sydney. Hi FD this will help 2012/2013 Victoria's period of daylight saving will start at 2:00am on Sunday 7 October 2012. At 2:00am standard time (Eastern Standard Time) move clocks forward one hour to 3:00am summer time. Victoria's period of daylight saving will end on Sunday 7 April 2013. At end of daylight saving period, move clock back one hour at 3:00am summer time to 2:00am standard time (Eastern Standard Time). cheers Geoff Link to comment Share on other sites More sharing options...
flying dog Posted July 22, 2012 Author Share Posted July 22, 2012 That doesn't really tell me the maths behind it. So Sunday 7 October is the FIRST Sunday of October, and not the first COMPLETE weekend. Link to comment Share on other sites More sharing options...
storchy neil Posted July 22, 2012 Share Posted July 22, 2012 flyingdog no maths just so as me curtains fade cows dont milk more time at pub more time to fly and drive to work in the dark neil 2 Link to comment Share on other sites More sharing options...
Guernsey Posted July 22, 2012 Share Posted July 22, 2012 There is a mathematical formula which is quite complicated however very 'interesting'. Because of the savings issue attached to daylight saving, a certain time interest is added each year depending on the Reserve Time Bank's current rate. With a current rate for this year being 8%, this will add 4.8 minutes so to keep the cows happy, you really need to change your clocks by one hour and four point eight minutes. Simple really. Link to comment Share on other sites More sharing options...
skyfox1 Posted July 22, 2012 Share Posted July 22, 2012 There is a mathematical formula which is quite complicated however very 'interesting'.Because of the savings issue attached to daylight saving, a certain time interest is added each year depending on the Reserve Time Bank's current rate. With a current rate for this year being 8%, this will add 4.8 minutes so to keep the cows happy, you really need to change your clocks by one hour and four point eight minutes. Simple really. Does that mean we will get 8% more milk. Link to comment Share on other sites More sharing options...
Guernsey Posted July 22, 2012 Share Posted July 22, 2012 Yes, but only if you tell the cows and they are interested. Guernsey cows automatically make the necessary adjustments. Alan. 1 Link to comment Share on other sites More sharing options...
frank marriott Posted July 22, 2012 Share Posted July 22, 2012 For flying I just use GMT [or UTC as they call it now] and any politcics of a paticular state does not matter FrankM 1 Link to comment Share on other sites More sharing options...
flying dog Posted July 22, 2012 Author Share Posted July 22, 2012 Yeah, thanks you lot. Maybe this thread needs to be moved to the HUMOUR part. Not exactly what I was wanting. :( Link to comment Share on other sites More sharing options...
Guest Howard Hughes Posted July 22, 2012 Share Posted July 22, 2012 I don't think there is a formula, only gazetted days (similar to the way public holidays are managed) which may change for various reasons. I know the weekend has changed a few times in my lifetime, including to accomodate sporting events/festivals. Link to comment Share on other sites More sharing options...
Guest Andys@coffs Posted July 22, 2012 Share Posted July 22, 2012 FD Im not sure if there is a formulae behind it or not, what I do know is that on a seemingly regular basis computer OS manufacturers (SUN and Microsoft being the ones Im aware of) have to issue "patches" to account for politicians playing with the fringes. For example, in SA when the Sydney Olympics were on, Daylight saving started much earlier than norrmal, to the ovious annoyance of those bunnies, self included that had to catch Red Eyes to the eastern states and therefore seemingly were getting up when the party crowd were just setling down. So, bottom line, even if there is a formula then be prepareed to manually adjust the outputs as they get played with from time to time. Furthermore, if going long distance allow for the states that dont play, I think QLD and WA from memory Andy Link to comment Share on other sites More sharing options...
turboplanner Posted July 22, 2012 Share Posted July 22, 2012 For flying I just use GMT [or UTC as they call it now] and any politcics of a paticular state does not matterFrankM A not unimportant point if you are PIC of an aircraft, and flying, using radio etc on a long trip. Let's say an issue crops up and you have to tell ATC of your arrival time after the turn of the next hour, what figure are you going to give. Link to comment Share on other sites More sharing options...
Guest Andys@coffs Posted July 22, 2012 Share Posted July 22, 2012 Gents All true with regard to GMT but at some stage of your life either prior or just after the flight you have to again transfer between local time and GMT. If you fly with any of the carriers across time zones you can see that even these "pro's" stuble and phaff about getting the local time correct. FD, most GPS's have a GMT and local time display (you usually choose these from a whole swag of available data fields to display, perhaps that might be of use to you? The ASA website that does first and last light definitions from meory provides the results in both GMT and local, GMT for those flight planning of course. Andy Link to comment Share on other sites More sharing options...
Zibi Posted July 23, 2012 Share Posted July 23, 2012 From Wikipedia: On 12 April 2007, New South Wales, Victoria, Tasmania, and the A.C.T. agreed to common beginning and ending dates for DST. Beginning in 2008, the start of DST in these states and in South Australia occurs on the first Sunday in October, and its end is on the first Sunday in April. I'm not sure if this can be put in any simpler way. Link to comment Share on other sites More sharing options...
turboplanner Posted July 23, 2012 Share Posted July 23, 2012 Other than the fact that States change it to suit major sporting events etc sometimes. Link to comment Share on other sites More sharing options...
Guest Howard Hughes Posted July 23, 2012 Share Posted July 23, 2012 Here you go Mr Dog, the official word. http://australia.gov.au/about-australia/our-country/time Link to comment Share on other sites More sharing options...
eightyknots Posted July 23, 2012 Share Posted July 23, 2012 Andys@coffs' date=' post: 229876, member: 94[/email']]So, bottom line, even if there is a formula then be prepareed to manually adjust the outputs as they get played with from time to time. Furthermore, if going long distance allow for the states that dont play, I think QLD and WA from memory Andy Nor do two of Australia's three territorities "do" daylight savings. Link to comment Share on other sites More sharing options...
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