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Unreleased

Zone Changes

  • Allow additional disputed areas to overlap (#105)
    • Africa/Ouagadougou, Africa/Porto-Novo overlap. See article.
    • America/Lower_Princes, America/Marigot overlap. See article.
    • Asia/Bangkok, Asia/Yangon overlap. See article.
    • Asia/Hebron, Asia/Jerusalem overlap in Area H2. See article
    • Asia/Kolkata, Asia/Shanghai overlap. See article.
    • Europe/Athens, Europe/Istanbul overlap. See article.
  • Ensure territorial waters are included in the following zones:
    • Asia/Srednekolymsk
    • Australia/Adelaide
    • Australia/Brisbane
    • Australia/Darwin
    • Australia/Eucla
    • Australia/Hobart
    • Australia/Lindeman
    • Australia/Melbourne
    • Australia/Perth
    • Australia/Sydney
  • Merge some zones that were moved to the backzone file in the timezone database
    • Australia/Currie is now a part of Australia/Hobart
  • Update to latest OSM data

Other Changes

  • Change output folder of various files outputted from building script (#102).
  • Update list of libraries using data (#110, #111).
  • Update all dependencies and require at least node 12.

2020d

Zone Changes

  • Update some Canadian zones as follows (#90)
    • Use OSM timezone relations in entirety for the following zones: America/Blanc_Sablon, America/Glace_Bay, America/Halifax, America/Swift_Current, America/Toronto
  • Add disputed area along Northwest Bhutan-China border.
  • Manually add back the Jungholz Village to Europe/Vienna (#93).
  • Update to latest OSM data

Other Changes

  • Switch command line flag processing to use the yargs library. Existing flags have changed: --no-validation` and --filtered-zones have been renamed to ``--skip_validation and --included_zones respectively. --included_zones now takes a list without quotes or commas.
  • Addition of new flags: --excluded_zones, --dist_dir, --downloads_dir, --skip_analyze_diffs, --skip_shapefile, --skip_zip. See --help and README.md for details.
  • Remove unneeded downloaded files from downloads directory before creating input data zipfile (#82).
  • Junk directory names when zipping data for releases
  • Add ability to generate a difference of the zone boundaries between the current config and the latest release. (#83).

2020a

Zone Changes

  • Allow timezones Asia/Tbilisi and Europe/Moscow to overlap
  • Rename America/Godthab to America/Nuuk (#77)
  • Update some Canadian zones as follows (#76)
    • Make Listuguj part of America/Halifax instead of America/Moncton
    • Make America/Nipigon comprise of most of mid-Ontario. Credit to OSM user Arctic gnome for OSM edits.
    • Make America/Rainy_River comprise of the Westernmost parts of Ontario bordering Manitoba. Credit to OSM user Arctic gnome for OSM edits.
    • Split Northwest Territories timezones (America/Inuvik and America/Yellowknife) in two using 120th meridian
    • Make America/Swift_Current comprise of all areas in southwest Saskatchewan between the America/Regina and America/Edmonton timezones.
    • Split Yukon timezones (America/Dawson and America/Whitehorse) in two using 138th meridian
  • Update to latest OSM data

Other Changes

  • Update packages to latest versions
  • Include input data in release files (#78)

2019b

Zone Changes

  • Update to latest OSM data

Other Changes

  • Include JSON list of timezone names in each release (#69)
  • Improve troubleshooting wiki by adding demo video on fixing broken relations (#68)

2019a

Zone Changes

  • Split Vietnam into 2 zones (#66)
    • Make Northern Vietnam be a part of Asia/Bangkok
    • Southern Vietnam stays Asia/Ho_Chi_Minh
  • Make Bir Tawil area be a part of Africa/Cairo instead of being a part of Africa/Khartoum.
  • Update to latest OSM data

Other Changes

  • Add standard linter (#67)

2018i

Zone Changes

  • Make territories of Taiwan take precedence when they overlap Chinese-claimed territories. (#52)
  • Add Oslo Accords Area B and C to Asia/Jerusalem. (#53)
  • Create new zone Asia/Qostanay by taking area from Asia/Qyzylorda. (#59)
  • Change timezone for Antarctic Station Neumayer III Station from Europe/Berlin to Etc/UTC. (#61)
  • Update to latest OSM data

Other Changes

  • Add some badges to the README
  • Add progress stats reporting
  • Update to use Node 10 (#56)

2018g

Zone Changes

  • Switch geometries of America/Danmarkshavn and America/Scoresbysund (#40)
  • Add timezones in Antarctica (#42)
  • Fix northern border of America/Argentina/Rio_Gallegos (#46)
  • Allow timezone boundaries to overlap. (#41)
    • This change now means that the following zones overlap:
      • Africa/Juba, Africa/Khartoum
      • America/Argentina/Rio_Gallegos, America/Punta_Arenas
      • America/La_Paz, America/Porto_Velho
      • America/Moncton, America/New_York
      • Asia/Hebron, Asia/Jerusalem
      • Asia/Ho_Chi_Minh, Asia/Manila
      • Asia/Ho_Chi_Minh, Asia/Shanghai
      • Asia/Manila, Asia/Shanghai
      • Asia/Shanghai, Asia/Taipei
      • Asia/Shanghai, Asia/Urumqi
      • Europe/Amsterdam, Europe/Berlin
      • Europe/Belgrade, Europe/Zagreb
      • Europe/Berlin, Europe/Luxembourg
      • Europe/Paris, Europe/Rome
  • Add disupted area near Doklam to Asia/Shanghai and Asia/Thimphu (#49)
  • Update boundaries of America/Creston and America/Edmonton to reflect changes in OpenStreetMap
  • Update to latest OSM data

Other Changes

  • Added more libraries to list of lookup libraries using this project's data
  • Fixed overpass querying (#43)

2018d

Zone Changes

  • Add timezones in the oceans (#34)
    • Shapefiles and geojson are now outputted as with or without oceans
  • Fix Viedma Glacier are to reflect latest OSM boundaries
  • Update to latest OSM data

Other Changes

  • Better debugging
    • Printing Overpass query for when no data is received.
    • Using geojsonhint and writing problematic geojson to a pretty-printed file.
    • Save validation overlaps to file.
    • Add links to troubleshooting wiki for common errors.
  • Update README
    • Add list of geographical lookup libraries
    • Add troubleshooting wiki

2017c

Zone Changes

  • Refactor of timezones in China (#13)
    • Integration of areas formerly found in Asia/Chongqing, Asia/Harbin and Asia/Kashgar into other zones
    • Expansion of Asia/Shanghai to all of China except Xinjiang
    • Asia/Urumqi is now comprised of Xinjiang
  • Fix Mexico Beach, FL by moving it to central time (#20)
  • Make Viedma glacier area work with updated OSM boundaries
  • Remove small holes and reduce geojson precision. (#11 and #17)
  • Remove zones found in backward file of timezone db (#16)
    • America/Coral_Harbour now integrated into America/Atikokan
    • America/Montreal now integrated into America/Toronto
    • See notes on China refactor for changes to Asia/Chongqing, Asia/Harbin, Asia/Kashgar, Asia/Shanghai and Asia/Urumqi
    • Asia/Rangoon renamed to Asia/Yangon
    • Pacific/Yap integrated into Pacific/Chuuk
    • Pacific/Johnston integrated into Pacific/Honolulu
  • Refactor arbitrary sea boundaries of timezones in the Gulf of St Lawrence to account for updated OSM geometry of the boundary of Quebec.
  • Add Page, AZ to America/Phoenix (#9)
  • Update to latest OSM data

Other Changes

  • Add linting of json files
    • A overpass source listed in timezones.json must have a corresponding definition in osmBoundarySources.json
    • A overpass source defined in osmBoundarySources.json must be used in at least one operation in timezones.json
    • A manual-polygon or manual-multipolygon defined in timezones.json must be accompanied with a description.
  • Add ability to build only certain zones in builder script
  • Add travis-ci builds that require linting script to pass
  • Added descriptions to manual geometries
  • Add ability to use overpass to fetch ways that represent boundaries
  • Rewrite README

2017a

  • Zone Changes
    • Add new zone America/Punta_Arenas by taking area from America/Santiago
    • Move the boundary of America/New_York and America/Chicago in the region of various towns in Alabama such as Phenix City to the west to include these towns in America/New_York
    • Implement own interpretation of border of America/Chicago and America/Denver in the following places:
      • Move boundary to the east of ND Highway 31 in Sioux county, ND
      • Move diagonal boundary through Stanley County, SD northwest so it doesn't go through the middle of Fort Pierre
    • Update to latest OSM data
  • Other changes
    • Add picture of zones to README

2016j

  • Zone Changes
    • Add new zone Asia/Atyrau by taking area from Asia/Aqtau
    • Add new zone Europe/Saratov by taking area from Europe/Volgograd
    • Update to latest OSM data
  • Other changes
    • README updates

2016i

  • Zone Changes
    • Split Cyprus into 2 zones. The existing Asia/Nicosia now ends at the northern boundary of the United Nations Buffer Zone and the new zone Asia/Famagusta contains everything north of the buffer zone.
    • Add missing data definitions: Congo-Kinshasa and South Sudan
    • Old Crimea boundary no longer exists in OSM, use combination of Crimea + Sevastopol
    • Typo of extra space in Harrison County fixed in OSM
    • Taishan City now has invalid geometry in OSM, use Xinhui district instead when making boundaries
    • Update to latest OSM data
  • Other changes
    • Add download throttling of publicly available Overpass API
    • Remove old dist files if they exist so ogr2ogr can work
    • Update README to note change in Overpass API querying

2016d

First data release of the project.