1--- 2title: Time Zone Data Reorganization 3--- 4 5# Time Zone Data Reorganization 6 7### Existing Data by Type 8 9**a) alias mapping** 10 11supplementalData.xml 12 13\<zoneFormatting> 14 15... 16 17\<zoneItem type="Africa/Asmera" territory="ER" aliases="Africa/Asmara"/> 18 19... 20 21\</zoneFormatting> 22 23**b) metazone -> golden zone** 24 25supplementalData.xml 26 27\<mapTimezones type="metazone"> 28 29... 30 31\<mapZone other="Africa\_Central" territory="001" type="Africa/Maputo"/> 32 33\<mapZone other="Africa\_Central" territory="BI" type="Africa/Bujumbura"/> 34 35\<mapZone other="Africa\_Central" territory="BW" type="Africa/Gaborone"/> 36 37\<mapZone other="Africa\_Central" territory="CD" type="Africa/Lubumbashi"/> 38 39\<mapZone other="Africa\_Central" territory="MW" type="Africa/Blantyre"/> 40 41\<mapZone other="Africa\_Central" territory="RW" type="Africa/Kigali"/> 42 43\<mapZone other="Africa\_Central" territory="ZM" type="Africa/Lusaka"/> 44 45\<mapZone other="Africa\_Central" territory="ZW" type="Africa/Harare"/> 46 47... 48 49\</mapTimezones> 50 51**c) historic metazone mapping** 52 53metazoneInfo.xml 54 55\<metazoneInfo> 56 57... 58 59\<timezone type="Asia/Yerevan"> 60 61\<usesMetazone to="1991-09-22 20:00" mzone="Yerevan"/> 62 63\<usesMetazone from="1991-09-22 20:00" mzone="Armenia"/> 64 65\</timezone> 66 67... 68 69\</metazoneInfo> 70 71**d) zone -> territory** 72 73supplementalData.xml 74 75\<zoneFormatting> 76 77... 78 79\<zoneItem type="Africa/Asmera" territory="ER" aliases="Africa/Asmara"/> 80 81... 82 83\</zoneFormatting> 84 85**e) territories where multiple time zones are available** 86 87supplementalData.xml 88 89\<zoneFormatting multizone="001 AQ AR AU BR CA CD CL CN EC ES FM GL ID KI KZ MH MN MX MY NZ PF PT RU UA UM US UZ" tzidVersion="2009f"> 90 91**f) Mapping between Olson ID and Unicode time zone short ID (bcp47 ids)** 92 93(1) bcp47/timezone.xml 94 95Short ID -> Olson ID 96 97\<type name="adalv" alias="Europe/Andorra"/> 98 99(2) supplementalData.xml 100 101Olson ID -> Short ID 102 103\<bcp47KeywordMappings> 104 105... 106 107\<mapTypes type="timezone"> 108 109... 110 111\<typeMap type="Europe/Andorra" bcp47="adalv"/> 112 113... 114 115\</mapTypes> 116 117... 118 119\</bcp47KeywordMappings> 120 121**g) Windows tzid mapping** 122 123supplementalData.xml 124 125\<mapTimezones type="windows"> 126 127\<mapZone other="AUS Central Standard Time" type="Australia/Darwin"/> \<!-- S (GMT+09:30) Darwin --> 128 129... 130 131\</mapTimezones> 132 133### Hige Level Proposal 134 135- bcp47/timezone.xml must be there, because all keyword keys/types must reside in bcp47/\*.xml. Therefore, f) (2) \<bcpKeywordMappings> should be deprecated (this is an invert mapping table) 136- The set of canonical Unicode time zone IDs is defined by bcp47/timezone.xml. Because we do not want to maintain the set in multiple places, long ID aliases could be embedded in bcp47/timezone.xml. 137- Metazone tables (b and c) should be in a single file 138- Territory mapping is almost equivalent to zone.tab in tzdata (minor exception - zone.tab does not include deprecated zones). I think it is not worth maintaining the data in CLDR. Therefore, d) and e) should be deprecated / no corresponding data in 1.8 139- Windows tz mapping is independently maintained - it should be moved into a new file. Side note: A single Windows tz could be mapped to multiple zones in future. 140 141### New Data Organization 142 1431. bcp47/timezone.xml 144 145Add long aliases - for example 146 147\<type name="erasm" alias="Africa/Asmera Africa/Asmara"/> 148 1492. metazoneInfo.xml 150 151Add b) into this file 152 1533. wintz.xml (new) 154 155Store only g). 156 157