TZDBK Back to Index page
 
Prolog 
Control Block Contents 
   TZDBK DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  TZDBK Prolog Top of page
 
 NAME       : HCPTZDBK
 DESCRIPTION: Time Zone Definition Block
 DSECT      : TZDBK
 FUNCTION   : This DSECT maps the definitions of local time
              zones based on each zone's deviation from the
              standard time at longitude 0.  This standard
              time is known as Universal Coordinated Time,
              abbreviation UTC.  This standard was formerly
              known as Greenwich Mean Time, abbreviation GMT.
 LOCATED BY : PFXSYS -> SYSCM
              SYSZANCR -> TZABK  (Time Zone Anchor Block)
              TZATZD -> TZDBK
              <TZDFWD -> TZDBK, until TZDFWD = 0>
 CREATED BY : HCPTZNAD
 DELETED BY : None
 
 
  TZDBK Control Block Content Top of page
 

 TZDBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure TZDBK Time Zone Definition Block 0000 0 Address 4 TZDFWD Forward pointer 0004 4 Signed 4 TZDZONE +/- seconds adjustment 0008 8 Character 4 TZDZNID Time zone id 0000000C TZDSIZE *-TZDBK Length of 1 entry 00000002 TZDSIZD (*-TZDBK+7)/8 Length in Double words
 
 
  TZDBK Storage Layout Top of page
 
          
*** TZDBK - Time Zone Definition Block
*
*     +---------------------------+---------------------------+
*   0 |          TZDFWD           |         TZDZONE           |
*     +---------------------------+---------------------------+
*   8 |         TZDZNID           | C
*     +---------------------------+
*
*** TZDBK - Time Zone Definition Block
 
 
  TZDBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
TZDFWD         0000
TZDSIZD        0008 00000002
TZDSIZE        0008 0000000C
TZDZNID        0008
TZDZONE        0004
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:57:22 EDT.
Copyright IBM Corporation, 1990, 2022