diff --git a/scripts/parse-iana-timezones.js b/scripts/parse-iana-timezones.js
deleted file mode 100644
index e2b35885c..000000000
--- a/scripts/parse-iana-timezones.js
+++ /dev/null
@@ -1,189 +0,0 @@
-const fs = require('fs');
-const chalk = require('chalk');
-const path = require('path');
-
-/**
- * Prints error, since source file was not provided
- */
-const sourceFileNotProvided = () => `
-${chalk.bold.red(`You didn't provide source file!`)}
-
-You need to run the script with source file:
-${chalk.cyan.bold('yarn run timezones source-file.json')}
-
-You could find applicable IANA timezone source file in json format from moment-timezone repository:
-${chalk.underline(
-  'https://raw.githubusercontent.com/moment/moment-timezone/develop/data/unpacked/latest.json'
-)}
-
-`;
-
-/**
- * Prints error, since source file did not exist.
- *
- * @param pathToFile source file.
- */
-const sourceFileMissing = pathToFile => `
-${chalk.bold.red(`The provided source file didn't exist!`)}
-
-Did you mistype the name of the source file:
-${chalk.cyan.bold(pathToFile)}
-
-`;
-
-/**
- * Prints error, since source file contained unknown JSON structure.
- */
-const sourceFileHasUnknownStructure = () => `
-${chalk.bold.red(`The provided source file has unknown structure!`)}
-
-The file should contain IANA timezone data in JSON format:
-{
-  "version": "2019b",
-  "zones": [
-    {
-      "name": "Africa/Abidjan",
-      //...
-    }
-    //...
-  ],
-  "links": []
-}
-`;
-
-/**
- * Generate the content for exported '.js' file.
- *
- * @param stringifiedZoneNames an array of timezone keys to be exported.
- *        Use JSON.stringify to generate this string.
- * @param relevantZonesPattern RexExp pattern to make it explicit that we are filtering
- *        IANA database instead of exposing all the keys.
- */
-const targetFileContent = (stringifiedZoneNames, relevantZonesPattern) =>
-  `// This file is generated with script:
-// yarn run timezones ./iana-2019b.json
-//
-// Note: iana-2019b.json file is downloaded from moment-timezone Github repository:
-//       https://github.com/moment/moment-timezone/tree/develop/data/unpacked
-//
-// Timezones are picked with RegExp:
-// ${relevantZonesPattern.toString()}
-//
-// You could find the latest IANA timezone source file (in JSON format)
-// from moment-timezone Github repository:
-// https://raw.githubusercontent.com/moment/moment-timezone/develop/data/unpacked/latest.json
-
-const ianaTimezoneKeys = ${stringifiedZoneNames}
-
-export default ianaTimezoneKeys;
-`;
-
-/**
- * Prints path to saved export containing IANA timezone keys.
- *
- * @param pathToFile export file.
- */
-const targetFileSaved = pathToFile => `
-IANA timezone keys are saved to file:
-${chalk.cyan.bold(pathToFile)}
-
-You should move this file to the component directory: FieldTimeZoneInput - and use it there.
-
-`;
-
-/**
- * Reads a file with JSON content and returns it.
- * We expect that the provided file exists and can be parsed to JSON.
- *
- * @param sourceFile JSON file to be read.
- */
-const readFileToJSON = sourceFile => {
-  const rawdata = fs.readFileSync(sourceFile);
-  return JSON.parse(rawdata);
-};
-
-/**
- * Creates target file name for the generated file.
- * a JS object.
- *
- * @param fileName
- * @param revision the current revision of the exported file.
- */
-const targetFileName = (fileName, revision = 0) => {
-  const fileNameWithoutExtension = fileName
-    .split('.')
-    .slice(0, -1)
-    .join('.');
-
-  const defaultExportFileName = `${fileNameWithoutExtension}-keys.js`;
-  const exportFileExists = fs.existsSync(path.resolve(process.cwd(), defaultExportFileName));
-
-  if (exportFileExists) {
-    const newRevision = revision + 1;
-    const exportFileNameWithRevision = `${fileNameWithoutExtension}-keys_(${newRevision}).js`;
-    const revisionedExportFileExists = fs.existsSync(
-      path.resolve(process.cwd(), exportFileNameWithRevision)
-    );
-
-    return revisionedExportFileExists
-      ? targetFileName(fileName, newRevision)
-      : exportFileNameWithRevision;
-  } else {
-    return defaultExportFileName;
-  }
-};
-
-/**
- * Exit program with error message
- *
- * @param message Error message to be printed to console.
- */
-const exitWithErrorMessage = message => {
-  process.on('exit', code => {
-    console.log(message);
-  });
-  process.exit(1);
-};
-
-const run = () => {
-  const fileName = process.argv[2];
-
-  if (fileName) {
-    const pathToFile = path.resolve(process.cwd(), fileName);
-
-    if (!fs.existsSync(pathToFile)) {
-      exitWithErrorMessage(sourceFileMissing(pathToFile));
-    } else {
-      const source = readFileToJSON(pathToFile);
-      const zones = source.zones;
-
-      if (!zones) {
-        exitWithErrorMessage(sourceFileHasUnknownStructure());
-      }
-
-      const relevantZonesPattern = new RegExp(
-        '^(Africa|America|Antarctica|Asia|Atlantic|Australia|Europe|Indian|Pacific)'
-      );
-      const zoneNames = source.zones.map(z => z.name).filter(z => relevantZonesPattern.test(z));
-
-      const stringifiedZoneNames = JSON.stringify(zoneNames, null, 2);
-      const [cleanFileName] = fileName.split('/').slice(-1);
-      const pathToExport = path.resolve(process.cwd(), targetFileName(cleanFileName));
-
-      fs.writeFile(
-        pathToExport,
-        targetFileContent(stringifiedZoneNames, relevantZonesPattern),
-        error => {
-          if (error) {
-            return console.error(error);
-          }
-          console.log(targetFileSaved(pathToExport));
-        }
-      );
-    }
-  } else {
-    exitWithErrorMessage(sourceFileNotProvided());
-  }
-};
-
-run();
diff --git a/src/components/FieldTimeZoneSelect/FieldTimeZoneSelect.js b/src/components/FieldTimeZoneSelect/FieldTimeZoneSelect.js
index acb28c2cb..a87518ff2 100644
--- a/src/components/FieldTimeZoneSelect/FieldTimeZoneSelect.js
+++ b/src/components/FieldTimeZoneSelect/FieldTimeZoneSelect.js
@@ -1,20 +1,20 @@
 import React from 'react';
-import { array, string } from 'prop-types';
+import { string } from 'prop-types';
+import { getTimeZoneNames } from '../../util/dates';
 import { FieldSelect } from '../../components';
 
-// You can update timezone keys if needed by running timezone script (aka parse-iana-timezones.js).
-// We have a script that can generate keys from moment-timezone data format
-// https://github.com/moment/moment-timezone/tree/develop/data/unpacked
-// Check the instructions from generated file: iana-2019b-keys.js
-import timezones from './iana-2019b-keys.js';
-
 const FieldTimeZoneSelect = props => {
+  // IANA database contains irrelevant time zones too.
+  const relevantZonesPattern = new RegExp(
+    '^(Africa|America|Antarctica|Asia|Atlantic|Australia|Europe|Indian|Pacific)'
+  );
+
   return (
     <FieldSelect {...props}>
       <option disabled value="">
         Pick something...
       </option>
-      {timezones.map(tz => (
+      {getTimeZoneNames(relevantZonesPattern).map(tz => (
         <option key={tz} value={tz}>
           {tz}
         </option>
@@ -28,7 +28,6 @@ FieldTimeZoneSelect.defaultProps = {
   className: null,
   id: null,
   label: null,
-  timezones: timezones,
 };
 
 FieldTimeZoneSelect.propTypes = {
@@ -40,8 +39,6 @@ FieldTimeZoneSelect.propTypes = {
   id: string,
   label: string,
   name: string.isRequired,
-
-  timezones: array,
 };
 
 export default FieldTimeZoneSelect;
diff --git a/src/components/FieldTimeZoneSelect/iana-2019b-keys.js b/src/components/FieldTimeZoneSelect/iana-2019b-keys.js
deleted file mode 100644
index ef2242c25..000000000
--- a/src/components/FieldTimeZoneSelect/iana-2019b-keys.js
+++ /dev/null
@@ -1,500 +0,0 @@
-// This file is generated with script:
-// yarn run timezones ./iana-2019b.json
-//
-// Note: iana-2019b.json file is downloaded from moment-timezone Github repository:
-//       https://github.com/moment/moment-timezone/tree/develop/data/unpacked
-//
-// Timezones are picked with RegExp:
-// /^(Africa|America|Antarctica|Asia|Atlantic|Australia|Europe|Indian|Pacific)/
-//
-// You could find the latest IANA timezone source file (in JSON format)
-// from moment-timezone Github repository:
-// https://raw.githubusercontent.com/moment/moment-timezone/develop/data/unpacked/latest.json
-
-const ianaTimezoneKeys = [
-  'Africa/Abidjan',
-  'Africa/Accra',
-  'Africa/Addis_Ababa',
-  'Africa/Algiers',
-  'Africa/Asmara',
-  'Africa/Asmera',
-  'Africa/Bamako',
-  'Africa/Bangui',
-  'Africa/Banjul',
-  'Africa/Bissau',
-  'Africa/Blantyre',
-  'Africa/Brazzaville',
-  'Africa/Bujumbura',
-  'Africa/Cairo',
-  'Africa/Casablanca',
-  'Africa/Ceuta',
-  'Africa/Conakry',
-  'Africa/Dakar',
-  'Africa/Dar_es_Salaam',
-  'Africa/Djibouti',
-  'Africa/Douala',
-  'Africa/El_Aaiun',
-  'Africa/Freetown',
-  'Africa/Gaborone',
-  'Africa/Harare',
-  'Africa/Johannesburg',
-  'Africa/Juba',
-  'Africa/Kampala',
-  'Africa/Khartoum',
-  'Africa/Kigali',
-  'Africa/Kinshasa',
-  'Africa/Lagos',
-  'Africa/Libreville',
-  'Africa/Lome',
-  'Africa/Luanda',
-  'Africa/Lubumbashi',
-  'Africa/Lusaka',
-  'Africa/Malabo',
-  'Africa/Maputo',
-  'Africa/Maseru',
-  'Africa/Mbabane',
-  'Africa/Mogadishu',
-  'Africa/Monrovia',
-  'Africa/Nairobi',
-  'Africa/Ndjamena',
-  'Africa/Niamey',
-  'Africa/Nouakchott',
-  'Africa/Ouagadougou',
-  'Africa/Porto-Novo',
-  'Africa/Sao_Tome',
-  'Africa/Timbuktu',
-  'Africa/Tripoli',
-  'Africa/Tunis',
-  'Africa/Windhoek',
-  'America/Adak',
-  'America/Anchorage',
-  'America/Anguilla',
-  'America/Antigua',
-  'America/Araguaina',
-  'America/Argentina/Buenos_Aires',
-  'America/Argentina/Catamarca',
-  'America/Argentina/ComodRivadavia',
-  'America/Argentina/Cordoba',
-  'America/Argentina/Jujuy',
-  'America/Argentina/La_Rioja',
-  'America/Argentina/Mendoza',
-  'America/Argentina/Rio_Gallegos',
-  'America/Argentina/Salta',
-  'America/Argentina/San_Juan',
-  'America/Argentina/San_Luis',
-  'America/Argentina/Tucuman',
-  'America/Argentina/Ushuaia',
-  'America/Aruba',
-  'America/Asuncion',
-  'America/Atikokan',
-  'America/Atka',
-  'America/Bahia_Banderas',
-  'America/Bahia',
-  'America/Barbados',
-  'America/Belem',
-  'America/Belize',
-  'America/Blanc-Sablon',
-  'America/Boa_Vista',
-  'America/Bogota',
-  'America/Boise',
-  'America/Buenos_Aires',
-  'America/Cambridge_Bay',
-  'America/Campo_Grande',
-  'America/Cancun',
-  'America/Caracas',
-  'America/Catamarca',
-  'America/Cayenne',
-  'America/Cayman',
-  'America/Chicago',
-  'America/Chihuahua',
-  'America/Coral_Harbour',
-  'America/Cordoba',
-  'America/Costa_Rica',
-  'America/Creston',
-  'America/Cuiaba',
-  'America/Curacao',
-  'America/Danmarkshavn',
-  'America/Dawson_Creek',
-  'America/Dawson',
-  'America/Denver',
-  'America/Detroit',
-  'America/Dominica',
-  'America/Edmonton',
-  'America/Eirunepe',
-  'America/El_Salvador',
-  'America/Ensenada',
-  'America/Fort_Nelson',
-  'America/Fort_Wayne',
-  'America/Fortaleza',
-  'America/Glace_Bay',
-  'America/Godthab',
-  'America/Goose_Bay',
-  'America/Grand_Turk',
-  'America/Grenada',
-  'America/Guadeloupe',
-  'America/Guatemala',
-  'America/Guayaquil',
-  'America/Guyana',
-  'America/Halifax',
-  'America/Havana',
-  'America/Hermosillo',
-  'America/Indiana/Indianapolis',
-  'America/Indiana/Knox',
-  'America/Indiana/Marengo',
-  'America/Indiana/Petersburg',
-  'America/Indiana/Tell_City',
-  'America/Indiana/Vevay',
-  'America/Indiana/Vincennes',
-  'America/Indiana/Winamac',
-  'America/Indianapolis',
-  'America/Inuvik',
-  'America/Iqaluit',
-  'America/Jamaica',
-  'America/Jujuy',
-  'America/Juneau',
-  'America/Kentucky/Louisville',
-  'America/Kentucky/Monticello',
-  'America/Knox_IN',
-  'America/Kralendijk',
-  'America/La_Paz',
-  'America/Lima',
-  'America/Los_Angeles',
-  'America/Louisville',
-  'America/Lower_Princes',
-  'America/Maceio',
-  'America/Managua',
-  'America/Manaus',
-  'America/Marigot',
-  'America/Martinique',
-  'America/Matamoros',
-  'America/Mazatlan',
-  'America/Mendoza',
-  'America/Menominee',
-  'America/Merida',
-  'America/Metlakatla',
-  'America/Mexico_City',
-  'America/Miquelon',
-  'America/Moncton',
-  'America/Monterrey',
-  'America/Montevideo',
-  'America/Montreal',
-  'America/Montserrat',
-  'America/Nassau',
-  'America/New_York',
-  'America/Nipigon',
-  'America/Nome',
-  'America/Noronha',
-  'America/North_Dakota/Beulah',
-  'America/North_Dakota/Center',
-  'America/North_Dakota/New_Salem',
-  'America/Ojinaga',
-  'America/Panama',
-  'America/Pangnirtung',
-  'America/Paramaribo',
-  'America/Phoenix',
-  'America/Port_of_Spain',
-  'America/Port-au-Prince',
-  'America/Porto_Acre',
-  'America/Porto_Velho',
-  'America/Puerto_Rico',
-  'America/Punta_Arenas',
-  'America/Rainy_River',
-  'America/Rankin_Inlet',
-  'America/Recife',
-  'America/Regina',
-  'America/Resolute',
-  'America/Rio_Branco',
-  'America/Rosario',
-  'America/Santa_Isabel',
-  'America/Santarem',
-  'America/Santiago',
-  'America/Santo_Domingo',
-  'America/Sao_Paulo',
-  'America/Scoresbysund',
-  'America/Shiprock',
-  'America/Sitka',
-  'America/St_Barthelemy',
-  'America/St_Johns',
-  'America/St_Kitts',
-  'America/St_Lucia',
-  'America/St_Thomas',
-  'America/St_Vincent',
-  'America/Swift_Current',
-  'America/Tegucigalpa',
-  'America/Thule',
-  'America/Thunder_Bay',
-  'America/Tijuana',
-  'America/Toronto',
-  'America/Tortola',
-  'America/Vancouver',
-  'America/Virgin',
-  'America/Whitehorse',
-  'America/Winnipeg',
-  'America/Yakutat',
-  'America/Yellowknife',
-  'Antarctica/Casey',
-  'Antarctica/Davis',
-  'Antarctica/DumontDUrville',
-  'Antarctica/Macquarie',
-  'Antarctica/Mawson',
-  'Antarctica/McMurdo',
-  'Antarctica/Palmer',
-  'Antarctica/Rothera',
-  'Antarctica/South_Pole',
-  'Antarctica/Syowa',
-  'Antarctica/Troll',
-  'Antarctica/Vostok',
-  'Asia/Aden',
-  'Asia/Almaty',
-  'Asia/Amman',
-  'Asia/Anadyr',
-  'Asia/Aqtau',
-  'Asia/Aqtobe',
-  'Asia/Ashgabat',
-  'Asia/Ashkhabad',
-  'Asia/Atyrau',
-  'Asia/Baghdad',
-  'Asia/Bahrain',
-  'Asia/Baku',
-  'Asia/Bangkok',
-  'Asia/Barnaul',
-  'Asia/Beirut',
-  'Asia/Bishkek',
-  'Asia/Brunei',
-  'Asia/Calcutta',
-  'Asia/Chita',
-  'Asia/Choibalsan',
-  'Asia/Chongqing',
-  'Asia/Chungking',
-  'Asia/Colombo',
-  'Asia/Dacca',
-  'Asia/Damascus',
-  'Asia/Dhaka',
-  'Asia/Dili',
-  'Asia/Dubai',
-  'Asia/Dushanbe',
-  'Asia/Famagusta',
-  'Asia/Gaza',
-  'Asia/Harbin',
-  'Asia/Hebron',
-  'Asia/Ho_Chi_Minh',
-  'Asia/Hong_Kong',
-  'Asia/Hovd',
-  'Asia/Irkutsk',
-  'Asia/Istanbul',
-  'Asia/Jakarta',
-  'Asia/Jayapura',
-  'Asia/Jerusalem',
-  'Asia/Kabul',
-  'Asia/Kamchatka',
-  'Asia/Karachi',
-  'Asia/Kashgar',
-  'Asia/Kathmandu',
-  'Asia/Katmandu',
-  'Asia/Khandyga',
-  'Asia/Kolkata',
-  'Asia/Krasnoyarsk',
-  'Asia/Kuala_Lumpur',
-  'Asia/Kuching',
-  'Asia/Kuwait',
-  'Asia/Macao',
-  'Asia/Macau',
-  'Asia/Magadan',
-  'Asia/Makassar',
-  'Asia/Manila',
-  'Asia/Muscat',
-  'Asia/Nicosia',
-  'Asia/Novokuznetsk',
-  'Asia/Novosibirsk',
-  'Asia/Omsk',
-  'Asia/Oral',
-  'Asia/Phnom_Penh',
-  'Asia/Pontianak',
-  'Asia/Pyongyang',
-  'Asia/Qatar',
-  'Asia/Qostanay',
-  'Asia/Qyzylorda',
-  'Asia/Rangoon',
-  'Asia/Riyadh',
-  'Asia/Saigon',
-  'Asia/Sakhalin',
-  'Asia/Samarkand',
-  'Asia/Seoul',
-  'Asia/Shanghai',
-  'Asia/Singapore',
-  'Asia/Srednekolymsk',
-  'Asia/Taipei',
-  'Asia/Tashkent',
-  'Asia/Tbilisi',
-  'Asia/Tehran',
-  'Asia/Tel_Aviv',
-  'Asia/Thimbu',
-  'Asia/Thimphu',
-  'Asia/Tokyo',
-  'Asia/Tomsk',
-  'Asia/Ujung_Pandang',
-  'Asia/Ulaanbaatar',
-  'Asia/Ulan_Bator',
-  'Asia/Urumqi',
-  'Asia/Ust-Nera',
-  'Asia/Vientiane',
-  'Asia/Vladivostok',
-  'Asia/Yakutsk',
-  'Asia/Yangon',
-  'Asia/Yekaterinburg',
-  'Asia/Yerevan',
-  'Atlantic/Azores',
-  'Atlantic/Bermuda',
-  'Atlantic/Canary',
-  'Atlantic/Cape_Verde',
-  'Atlantic/Faeroe',
-  'Atlantic/Faroe',
-  'Atlantic/Jan_Mayen',
-  'Atlantic/Madeira',
-  'Atlantic/Reykjavik',
-  'Atlantic/South_Georgia',
-  'Atlantic/St_Helena',
-  'Atlantic/Stanley',
-  'Australia/ACT',
-  'Australia/Adelaide',
-  'Australia/Brisbane',
-  'Australia/Broken_Hill',
-  'Australia/Canberra',
-  'Australia/Currie',
-  'Australia/Darwin',
-  'Australia/Eucla',
-  'Australia/Hobart',
-  'Australia/LHI',
-  'Australia/Lindeman',
-  'Australia/Lord_Howe',
-  'Australia/Melbourne',
-  'Australia/North',
-  'Australia/NSW',
-  'Australia/Perth',
-  'Australia/Queensland',
-  'Australia/South',
-  'Australia/Sydney',
-  'Australia/Tasmania',
-  'Australia/Victoria',
-  'Australia/West',
-  'Australia/Yancowinna',
-  'Europe/Amsterdam',
-  'Europe/Andorra',
-  'Europe/Astrakhan',
-  'Europe/Athens',
-  'Europe/Belfast',
-  'Europe/Belgrade',
-  'Europe/Berlin',
-  'Europe/Bratislava',
-  'Europe/Brussels',
-  'Europe/Bucharest',
-  'Europe/Budapest',
-  'Europe/Busingen',
-  'Europe/Chisinau',
-  'Europe/Copenhagen',
-  'Europe/Dublin',
-  'Europe/Gibraltar',
-  'Europe/Guernsey',
-  'Europe/Helsinki',
-  'Europe/Isle_of_Man',
-  'Europe/Istanbul',
-  'Europe/Jersey',
-  'Europe/Kaliningrad',
-  'Europe/Kiev',
-  'Europe/Kirov',
-  'Europe/Lisbon',
-  'Europe/Ljubljana',
-  'Europe/London',
-  'Europe/Luxembourg',
-  'Europe/Madrid',
-  'Europe/Malta',
-  'Europe/Mariehamn',
-  'Europe/Minsk',
-  'Europe/Monaco',
-  'Europe/Moscow',
-  'Europe/Nicosia',
-  'Europe/Oslo',
-  'Europe/Paris',
-  'Europe/Podgorica',
-  'Europe/Prague',
-  'Europe/Riga',
-  'Europe/Rome',
-  'Europe/Samara',
-  'Europe/San_Marino',
-  'Europe/Sarajevo',
-  'Europe/Saratov',
-  'Europe/Simferopol',
-  'Europe/Skopje',
-  'Europe/Sofia',
-  'Europe/Stockholm',
-  'Europe/Tallinn',
-  'Europe/Tirane',
-  'Europe/Tiraspol',
-  'Europe/Ulyanovsk',
-  'Europe/Uzhgorod',
-  'Europe/Vaduz',
-  'Europe/Vatican',
-  'Europe/Vienna',
-  'Europe/Vilnius',
-  'Europe/Volgograd',
-  'Europe/Warsaw',
-  'Europe/Zagreb',
-  'Europe/Zaporozhye',
-  'Europe/Zurich',
-  'Indian/Antananarivo',
-  'Indian/Chagos',
-  'Indian/Christmas',
-  'Indian/Cocos',
-  'Indian/Comoro',
-  'Indian/Kerguelen',
-  'Indian/Mahe',
-  'Indian/Maldives',
-  'Indian/Mauritius',
-  'Indian/Mayotte',
-  'Indian/Reunion',
-  'Pacific/Apia',
-  'Pacific/Auckland',
-  'Pacific/Bougainville',
-  'Pacific/Chatham',
-  'Pacific/Chuuk',
-  'Pacific/Easter',
-  'Pacific/Efate',
-  'Pacific/Enderbury',
-  'Pacific/Fakaofo',
-  'Pacific/Fiji',
-  'Pacific/Funafuti',
-  'Pacific/Galapagos',
-  'Pacific/Gambier',
-  'Pacific/Guadalcanal',
-  'Pacific/Guam',
-  'Pacific/Honolulu',
-  'Pacific/Johnston',
-  'Pacific/Kiritimati',
-  'Pacific/Kosrae',
-  'Pacific/Kwajalein',
-  'Pacific/Majuro',
-  'Pacific/Marquesas',
-  'Pacific/Midway',
-  'Pacific/Nauru',
-  'Pacific/Niue',
-  'Pacific/Norfolk',
-  'Pacific/Noumea',
-  'Pacific/Pago_Pago',
-  'Pacific/Palau',
-  'Pacific/Pitcairn',
-  'Pacific/Pohnpei',
-  'Pacific/Ponape',
-  'Pacific/Port_Moresby',
-  'Pacific/Rarotonga',
-  'Pacific/Saipan',
-  'Pacific/Samoa',
-  'Pacific/Tahiti',
-  'Pacific/Tarawa',
-  'Pacific/Tongatapu',
-  'Pacific/Truk',
-  'Pacific/Wake',
-  'Pacific/Wallis',
-  'Pacific/Yap',
-];
-
-export default ianaTimezoneKeys;
diff --git a/src/util/dates.js b/src/util/dates.js
index 2970a373c..0a7996564 100644
--- a/src/util/dates.js
+++ b/src/util/dates.js
@@ -90,6 +90,18 @@ export const isValidTimeZone = timeZone => {
   }
 };
 
+/**
+ * Return the names of the time zones according to IANA timezone db.
+ *
+ * @param {RegExp} relevantZonesRegExp is pattern to filter returned time zones.
+ *
+ * @returns {Array} an array of relevant time zones.
+ */
+export const getTimeZoneNames = relevantZonesRegExp => {
+  const allTimeZones = moment.tz.names();
+  return relevantZonesRegExp ? allTimeZones.filter(z => relevantZonesRegExp.test(z)) : allTimeZones;
+};
+
 /**
  * Format date instance to string and localized it to given time zone.
  * Default formatting shows date and hours and minutes in 24 hour format: