Date Timezone Oracle PLSQL

SQL>
SQL> --You can obtain all the time zone names by selecting all the rows from v$timezone_names.
SQL>
SQL> SELECT * FROM v$timezone_names where rownum < 200;
TZNAME                                                           TZABBREV
---------------------------------------------------------------- ----------------------------------------------------------------
Africa/Algiers                                                   LMT
Africa/Algiers                                                   PMT
Africa/Algiers                                                   WET
Africa/Algiers                                                   WEST
Africa/Algiers                                                   CET
Africa/Algiers                                                   CEST
Africa/Cairo                                                     LMT
Africa/Cairo                                                     EET
Africa/Cairo                                                     EEST
Africa/Casablanca                                                LMT
Africa/Casablanca                                                WET
Africa/Casablanca                                                WEST
Africa/Casablanca                                                CET
Africa/Ceuta                                                     LMT
Africa/Ceuta                                                     WET
Africa/Ceuta                                                     WEST
Africa/Ceuta                                                     CET
Africa/Ceuta                                                     CEST
Africa/Djibouti                                                  LMT
Africa/Djibouti                                                  EAT
Africa/Freetown                                                  LMT
Africa/Freetown                                                  FMT
Africa/Freetown                                                  WAT
Africa/Freetown                                                  SLST
Africa/Freetown                                                  GMT
Africa/Johannesburg                                              LMT
Africa/Johannesburg                                              SAST
Africa/Khartoum                                                  LMT
Africa/Khartoum                                                  CAT
Africa/Khartoum                                                  CAST
Africa/Mogadishu                                                 LMT
Africa/Mogadishu                                                 EAT
Africa/Mogadishu                                                 BEAT
Africa/Nairobi                                                   LMT
Africa/Nairobi                                                   EAT
Africa/Nairobi                                                   BEAT
Africa/Nairobi                                                   BEAUT
Africa/Nouakchott                                                LMT
Africa/Nouakchott                                                GMT
Africa/Nouakchott                                                WAT
Africa/Tripoli                                                   LMT
Africa/Tripoli                                                   CET
Africa/Tripoli                                                   CEST
Africa/Tripoli                                                   EET
Africa/Tunis                                                     LMT
Africa/Tunis                                                     PMT
Africa/Tunis                                                     CET
Africa/Tunis                                                     CEST
Africa/Windhoek                                                  LMT
Africa/Windhoek                                                  SWAT
Africa/Windhoek                                                  SAST
Africa/Windhoek                                                  CAT
Africa/Windhoek                                                  WAT
Africa/Windhoek                                                  WAST
America/Adak                                                     LMT
America/Adak                                                     NST
America/Adak                                                     NWT
America/Adak                                                     BST
America/Adak                                                     BDT
America/Adak                                                     HAST
America/Adak                                                     HADT
America/Anchorage                                                LMT
America/Anchorage                                                CAT
America/Anchorage                                                CAWT
America/Anchorage                                                AHST
America/Anchorage                                                AHDT
America/Anchorage                                                AKST
America/Anchorage                                                AKDT
America/Anguilla                                                 LMT
America/Anguilla                                                 AST
America/Araguaina                                                LMT
America/Araguaina                                                BRT
America/Araguaina                                                BRST
America/Aruba                                                    LMT
America/Aruba                                                    ANT
America/Aruba                                                    AST
America/Asuncion                                                 LMT
America/Asuncion                                                 AMT
America/Asuncion                                                 PYT
America/Asuncion                                                 PYST
America/Atka                                                     LMT
America/Atka                                                     NST
America/Atka                                                     NWT
America/Atka                                                     BST
America/Atka                                                     BDT
America/Atka                                                     HAST
America/Atka                                                     HADT
America/Belem                                                    LMT
America/Belem                                                    BRT
America/Belem                                                    BRST
America/Boa_Vista                                                LMT
America/Boa_Vista                                                AMT
America/Boa_Vista                                                AMST
America/Bogota                                                   LMT
America/Bogota                                                   BMT
America/Bogota                                                   COT
America/Bogota                                                   COST
America/Boise                                                    LMT
America/Boise                                                    PST
America/Boise                                                    PWT
America/Boise                                                    MST
America/Boise                                                    MWT
America/Boise                                                    MDT
America/Buenos_Aires                                             LMT
America/Buenos_Aires                                             CMT
America/Buenos_Aires                                             ART
America/Buenos_Aires                                             ARST
America/Cambridge_Bay                                            LMT
America/Cambridge_Bay                                            MST
America/Cambridge_Bay                                            MDT
America/Cambridge_Bay                                            MDDT
America/Cambridge_Bay                                            CST
America/Cambridge_Bay                                            CDT
America/Cambridge_Bay                                            EST
America/Cancun                                                   LMT
America/Cancun                                                   CST
America/Cancun                                                   EST
America/Cancun                                                   EDT
America/Cancun                                                   CDT
America/Caracas                                                  LMT
America/Caracas                                                  CMT
America/Caracas                                                  VET
America/Cayenne                                                  LMT
America/Cayenne                                                  GFT
America/Cayman                                                   LMT
America/Cayman                                                   KMT
America/Cayman                                                   EST
America/Chicago                                                  LMT
America/Chicago                                                  CST
America/Chicago                                                  CWT
America/Chicago                                                  CDT
America/Chicago                                                  EST
America/Chihuahua                                                LMT
America/Chihuahua                                                MST
America/Chihuahua                                                CST
America/Chihuahua                                                CDT
America/Chihuahua                                                MDT
America/Costa_Rica                                               LMT
America/Costa_Rica                                               SJMT
America/Costa_Rica                                               CST
America/Costa_Rica                                               CDT
America/Cuiaba                                                   LMT
America/Cuiaba                                                   AMT
America/Cuiaba                                                   AMST
America/Curacao                                                  LMT
America/Curacao                                                  ANT
America/Curacao                                                  AST
America/Dawson                                                   LMT
America/Dawson                                                   YST
America/Dawson                                                   YDT
America/Dawson                                                   YDDT
America/Dawson                                                   PST
America/Dawson                                                   PDT
America/Dawson_Creek                                             LMT
America/Dawson_Creek                                             PST
America/Dawson_Creek                                             PDT
America/Dawson_Creek                                             MST
America/Denver                                                   LMT
America/Denver                                                   MST
America/Denver                                                   MWT
America/Denver                                                   MDT
America/Detroit                                                  LMT
America/Detroit                                                  CST
America/Detroit                                                  EST
America/Detroit                                                  EWT
America/Detroit                                                  EDT
America/Edmonton                                                 LMT
America/Edmonton                                                 MST
America/Edmonton                                                 MDT
America/El_Salvador                                              LMT
America/El_Salvador                                              CST
America/El_Salvador                                              CDT
America/Ensenada                                                 LMT
America/Ensenada                                                 MST
America/Ensenada                                                 PST
America/Ensenada                                                 PDT
America/Ensenada                                                 PWT
TZNAME                                                           TZABBREV
---------------------------------------------------------------- ----------------------------------------------------------------
America/Fort_Wayne                                               LMT
America/Fort_Wayne                                               CST
America/Fort_Wayne                                               CWT
America/Fort_Wayne                                               CDT
America/Fort_Wayne                                               EST
America/Fort_Wayne                                               EDT
America/Fortaleza                                                LMT
America/Fortaleza                                                BRT
America/Fortaleza                                                BRST
America/Godthab                                                  LMT
America/Godthab                                                  WGT
America/Godthab                                                  WGST
America/Goose_Bay                                                LMT
America/Goose_Bay                                                NST
America/Goose_Bay                                                NDT
America/Goose_Bay                                                AST
America/Goose_Bay                                                ADT
America/Goose_Bay                                                ADDT
America/Grand_Turk                                               LMT
America/Grand_Turk                                               KMT
America/Grand_Turk                                               EST
America/Grand_Turk                                               EDT
199 rows selected.
SQL>