Hi John,

If the time zone is UT + 5 hours 30 minutes the standard meridian indeed is 
-5.5 * 15 = -82.5 degrees.
Succes with the sundial and please let us know how this project is going.

Best wishes, Fer.

 

Fer J. de Vries

De Zonnewijzerkring
http://www.de-zonnewijzerkring.nl

Molens
http://www.collsemolen.dse.nl

Eindhoven, Netherlands
lat.  51:30 N      long.  5:30 E

  ----- Original Message ----- 
  From: John Carmichael 
  To: [email protected] 
  Sent: Friday, February 08, 2008 5:28 PM
  Subject: Sundial for odd time zone


  Hi Guys:

   

  I need a little help with something. I am designing a monumental sundial for 
New Delhi India (a new building that will called the "Time Tower").  But I've 
run into I problem I've never had to deal with before.  The problem is that 
India has a strange Time Zone.  Its Time Zone is UT + 5 Hrs. 30 Min.  I am 
using ZW 2000 to design the dial.  Here is my question:  What number should I 
enter into Zonwvlak for the Standard Meridian?  

   

  My thinking goes like this:

   

  The sundial will be located at local meridian (longitude) -77.0769 degrees.  
If it had a normal time zone, the Standard Meridian would be -75 degrees (UT+ 5 
hrs.).  But since its Time Zone is UT +5:30, then wouldn't its Standard 
Meridian be -(75 + 7.5) = -82.5 degrees?  Is this correct?

   

  Thanks

   

  John



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