|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Mars Previewer 2 question
I am trying to make sense of what I saw and have imaged using Mars Previewer
2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? cheers -halli- |
#2
|
|||
|
|||
Mars Previewer 2 question
In message , -halli-
writes I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? cheers -halli- -1 0100 BST = midnight UT or GMT -- Dave Smith website: http://www.graviton.demon.co.uk Castle Point Astronomy Club: http://www.cpac.org.uk/ |
#3
|
|||
|
|||
Mars Previewer 2 question
"Dave Smith" wrote in message ... In message , -halli- writes I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? cheers -halli- -1 0100 BST = midnight UT or GMT Thank you, Dave. -halli- |
#4
|
|||
|
|||
Mars Previewer 2 question
JRS: In article , seen in
news:uk.sci.astronomy, -halli- posted at Wed, 27 Aug 2003 23:56:12 :- I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? GMT midnight is at 1 a.m. BST. BBC World Service @ 648m proves this nightly. -- © John Stockton, Surrey, UK. Turnpike v4.00 MIME. © Web URL:http://www.merlyn.demon.co.uk/ - w. FAQish topics, links, acronyms PAS EXE etc : URL:http://www.merlyn.demon.co.uk/programs/ - see 00index.htm Dates - miscdate.htm moredate.htm js-dates.htm pas-time.htm critdate.htm etc. |
#5
|
|||
|
|||
Mars Previewer 2 question
Wasn't it -halli- who wrote:
I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? Whenever I want to know what time zone someone is in, I look at their message headers. Yours says "Date: Wed, 27 Aug 2003 23:56:12 +0100" so you're in the +1 hour time zone. -- Mike Williams Gentleman of Leisure |
#6
|
|||
|
|||
Mars Previewer 2 question
"Mike Williams" wrote in message ... Wasn't it -halli- who wrote: I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? Whenever I want to know what time zone someone is in, I look at their message headers. Yours says "Date: Wed, 27 Aug 2003 23:56:12 +0100" so you're in the +1 hour time zone. Hmm, I am confused now. Does this mean you agree with Dave Smith that the setting should be -1, or are you and Dr Stockton saying the setting should be +1? My brain hurts! I have not needed to think for the past 5 and a half weeks, and now I am returning to school (teacher not pupil) I have too much to think about. We need more holidays! ;-) Thanks for all of your help -halli- |
#7
|
|||
|
|||
Mars Previewer 2 question
In message , -halli-
writes "Mike Williams" wrote in message ... Wasn't it -halli- who wrote: I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? Whenever I want to know what time zone someone is in, I look at their message headers. Yours says "Date: Wed, 27 Aug 2003 23:56:12 +0100" so you're in the +1 hour time zone. Hmm, I am confused now. Does this mean you agree with Dave Smith that the setting should be -1, or are you and Dr Stockton saying the setting should be +1? My brain hurts! I have not needed to think for the past 5 and a half weeks, and now I am returning to school (teacher not pupil) I have too much to think about. We need more holidays! ;-) Thanks for all of your help -halli- Here is the relevant section from the help file. Quote Time Enter the local time of observation in hh:mm format. Mars Previewer does not consider Daylight Savings Time, so add or subtract an hour as needed. Timezone Enter here your Time Zone, in hours west of Greenwich. if your location is east of Greenwich your time zone will be negative. Mars previewer II - (c) 1997-1999 Leandro Rios end quote BST is like being 1 hour to the East so if the time is entered in BST then the time zone needs to be -1 to get the correct view of Mars. Clearly the program intends you to convert the time to GMT or UT first and then there is no ambiguity. I used the program on the night of Wed 27/Thurs 28. At 0100 BST and a time zone setting of -1 in Mars Previewer II and had agreement between my image and the simulation. (See my website - Planets page) It is also straightforward to check by comparing the predictions e.g. Time = 00:00 and Timezone = 0 with Time = 01:00 and Timezone = -1 With Timezone set on +1 a different view is obtained. I hope this helps. -- Dave Smith website: http://www.graviton.demon.co.uk Castle Point Astronomy Club: http://www.cpac.org.uk/ |
#8
|
|||
|
|||
Mars Previewer 2 question
JRS: In article , seen in
news:uk.sci.astronomy, Mike Williams posted at Thu, 28 Aug 2003 20:31:00 :- Wasn't it -halli- who wrote: I am trying to make sense of what I saw and have imaged using Mars Previewer 2. Which timezone are we here in the UK -1, 1 or 0 (thinking about BST and GMT etc.)? Whenever I want to know what time zone someone is in, I look at their message headers. Yours says "Date: Wed, 27 Aug 2003 23:56:12 +0100" so you're in the +1 hour time zone. Where the offset is given as a signed number, it is dangerous to assume any particular sign convention without additional data. There is, for example, an apparent tendency for Americans to use Abs of the difference, and then to decide of a sign convention that leaves the number, for use in the USA, positive. But sometimes they don't do that. That's why I prefer to state one particular instant in both systems; there can be no doubt that that means, and it is up to the reader to determine how to use it. Midnight GMT occurs at 1 a.m. UK Summer Time , and that should be easy enough to understand - and anyone who can listen to real-time BBC World Service, or who can use www.heavens-above.com, has access to GMT/UTC. Using Newsgroup headers presumes a correctly-configured system; granted, they commonly are. Except that some use services, such as Google, outside their time zone. Members of this group can determine the proper time from the Moons of Jupiter. -- © John Stockton, Surrey, UK. Turnpike v4.00 MIME. © Web URL:http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms & links; some Astro stuff via astro.htm, gravity0.htm; quotes.htm; pascal.htm; &c, &c. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Space Calendar - February 27, 2004 | Ron | Astronomy Misc | 1 | February 27th 04 07:18 PM |
Color image of Mars from Mars Express. | Robert Clark | Amateur Astronomy | 8 | December 9th 03 08:27 PM |
Space Calendar - October 24, 2003 | Ron Baalke | History | 0 | October 24th 03 04:38 PM |
If You Thought That Was a Close View of Mars, Just Wait (Mars Reconnaissance Orbiter) | Ron Baalke | Science | 0 | September 23rd 03 10:25 PM |
Space Calendar - July 24, 2003 | Ron Baalke | Misc | 0 | July 24th 03 11:26 PM |