[EHPweb] Fwd: FEPlus change for new Venezuela time zone

[Wald Lisa]

Please further distribute as needed.
- Lisa
------


Begin forwarded message:

From: Bruce W Presgrave <presgrave at usgs.gov>
Date: August 28, 2008 5:17:24 PM MDT
To: Lisa A Wald <lisa at usgs.gov>
Subject: FEPlus change for new Venezuela time zone

Hi Lisa,

I would appreciate it if you would send the following to your web
development list. Thanks.

   Bruce

----------------
Folks,

As you may have heard, at the beginning of this year Venezuela  
introduced a
38th "standard" time zone in the world, UTC-4:30 or in keeping with the
system in the FEPlus code, zone "r", because it is +0.5 hours from  
zone "R"
which is UTC-5.  I have changed the include file timezonedef.inc, and
recompiled the subroutines which use it, gettimzon.for and  
summertim.for.
The revised programs are available from our ftp site,
ftp://hazards.cr.usgs.gov/feregion/feplus/source/.

The following diff's show what changes were made in the include file:

  File USERS$NSN:[USNSN.NSN.INC]TIMEZONEDEF.INC;27
   12   c       Venezuela created a new half-hour zone (r, or UTC-4.5)  
in
January 2008
   13
   14           integer*4 STDTIMMAX             ! maximum number of
standard zones
   15           parameter (STDTIMMAX = 38)
   16
  ******
  File USERS$NSN:[USNSN.NSN.INC]TIMEZONEDEF.INC;26
   12
   13           integer*4 STDTIMMAX             ! maximum number of
standard zones
   14           parameter (STDTIMMAX = 37)
   15
  ************
  ************
  File USERS$NSN:[USNSN.NSN.INC]TIMEZONEDEF.INC;27
   41        1               'r',       ! Venezuela
   42        1               'q',       ! Island of Newfoundland
  ******
  File USERS$NSN:[USNSN.NSN.INC]TIMEZONEDEF.INC;26
   40        1               'q',       ! Island of Newfoundland
  ************
  ************
  File USERS$NSN:[USNSN.NSN.INC]TIMEZONEDEF.INC;27
   55        1                 6.0,  7.0,  8.0,
9.0,10.0,11.0,12.0,-9.5,-4.5,
   56        1                -3.5,  3.5,  4.5, 5.5,5.75, 6.5,
9.5,10.5,11.5,
   57        1               12.75, 13.0/
   58
  ******
  File USERS$NSN:[USNSN.NSN.INC]TIMEZONEDEF.INC;26
   53        1                 6.0,  7.0,  8.0,
9.0,10.0,11.0,12.0,-9.5,-3.5,
   54        1                 3.5,  4.5,  5.5, 5.75, 6.5,
9.5,10.5,11.5,12.75,
   55        1                13.0/
   56
  ************

I have not yet changed the time zone code in any of the polygons, to  
allow
some time for others to implement a similar change in their programs.  I
plan to wait about a week before making the polygon changes.  Unless you
"automatically" download updated polygons, or if you ignore the time  
zone
code in them, you should not have a problem.  But be advised that the  
next
time there is a message about new FEPlus polygons, the Venezuela ones  
will
use the new "r" time zone.

If anyone has questions or concerns about this change or implementation
timing, please let me know.

Thanks,
   Bruce


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