Sampling of countries/islands in different time zones: ZONE 0: ZONE 8: ENEWETAK LABRADOR KWAJALEIN NOVA SCOTIA DOMINICAN REPUBLIC ZONE 1: PUERTO RICO SAMOA IS. BERMUDA TOKELAU LESSER ANTILLES PHOENIX IS. VENEZUELA HOWLAND IS. WESTERN BRAZIL MIDWAY BOLIVIA PARAGUAY ZONE 2: CHILE HAWAII KURE IS. ZONE 9: TAHITI GREENLAND BORA BORA NEWFOUNDLAND (+3O) FRENCH POLYNESIA GUYANA COOK IS. SURINAME CHRISTMAS IS. FRENCH GUIANA WESTERN ALEUTIANS EASTERN BRAZIL URUGUAY ZONE 3: ARGENTINA ALASKA EASTERN ALEUTIANS ZONE 10: GAMBIER IS. SO. SANDWICH IS. SO. GEORGIA IS. ZONE 4: ILHA DA TRINIDADE PST ZONE USA ATOL DAS ROCAS BRITISH COLUMBIA YUKON TERRITORY ZONE 11: AZORES ZONE 5: CAPE VERDE MST ZONE USA NORTHWEST ZONE OF MEXICO ZONE 12: ALBERTA ICELAND WESTERN NORTHWEST TERRITORIES IRELAND GREAT BRITAIN ZONE 6: PORTUGAL CST ZONE USA CANARY IS. SASKATCHEWAN MAURITANIA MANITOBA SENEGAL EASTERN NORTHWEST TERRITORIES GUINEA EASTERN ZONE OF MEXICO SIERRA LEONE CENTRAL AMERICA (EXCEPT PANAMA) LIBERIA IVORY COAST ZONE 7: GHANA EST ZONE USA MALI QUEBEC CUBA ZONE 13: BAHAMAS SPAIN JAMAICA FRANCE HAITI BELGIUM PANAMA NETHERLANDS COLOMBIA GERMANY ECUADOR DENMARK PERU SWITZERLAND ZONE 13: ZONE 16: cont. NORWAY AFGHANISTAN (+3O) SWEDEN OMAN POLAND UNITED ARAB EMIRATES CZECHOSLOVAKIA AUSTRIA ZONE 17: HUNGARY INDIA (+3O) YUGOSLAVIA NEPAL (+4O) ALBANIA SRI LANKA (+3O) ITALY PAKISTAN MOROCCO ALGERIA ZONE 18: LIBYA BURMA (+3O) NIGER BANGLADESH CHAD NIGERIA ZONE 19: CENTRAL AFRICAN REPUBLIC THAILAND GABON LAOS CONGO CAMBODIA ANGOLA VIETNAM INDONESIA ZONE 14: FINLAND ZONE 20: ROMANIA CHINA BULGARIA MALAYSIA GREECE PHILIPPINES EGYPT TAIWAN ISRAEL WESTERN AUSTRALIA JORDAN SYRIA ZONE 21: LEBANON KOREA SUDAN JAPAN ZAIRE WESTERN NEW GUINEA ZAMBIA MID AUSTRALIA (+3O) ZIMBABWE MOZAMBIQUE ZONE 22: BOTSWANA GUAM NAMIBIA EASTERN NEW GUINEA SOUTH AFRICA EASTERN AUSTRALIA ZONE 15: ZONE 23: RUSSIA, WESTERN ZONE SOLOMON IS. TURKEY TRUK IS. IRAN (+3O) KURIL IS. IRAQ NEW CALEDONIA SAUDI ARABIA YEMEN ZONE 24: KUWAIT WAKE IS. ETHIOPIA FIGI SOMALIA NEW ZEALAND KENYA GILBERT IS. UGANDA TANZANIA ZONE 25: MADAGASCAR EASTERN-MOST ZONE OF RUSSIA TONGA * Numbers in parentheses (+30) indicate +30 minutes (for countries on off-hour times), for example if the time in Israel (zone 14) is 9AM then the time in Moscow (zone 15) is 10AM and in Iran (zone 15) it's 10:30AM. The time zone system is based on the division of the world into 24 hours or time zones by 24 meridians placed 15 longitude degrees apart. One time zone is split into two separate zones by the IDL, designated in this program as Zone 24 on the west side of the IDL, and Zone 0 on the east side of the IDL. The times in each of these two zones is the same, except that Zone 24 is the next day. (On crossing the IDL going to the west the date is advanced one day.) While the International Date Line is symbollically represented as a straight line, a glance at any world map shows in reality a zig-zag configuration. The IDL was to originally have been aligned with the 180th degree meridian, but segments were shifted in accordance with practical considerations for individual countries/island groups. For example, the eastern-most portion of Russia (the USSR traverses 11 time zones) is traversed by the 180th degree meridian, which would have placed adjoining regions at the same time on different days - hence, the creation of Zone 25 to keep the entire country west of the IDL, by shifting a segment of the IDL eastward to the Bering Strait. The time in Zone 25 is the same as that in Zone 1, except Zone 25 is the next day, being on the opposite side of the IDL. As can readily be seen, the difference in hours between any 2 time zones can be determined at a glance by simply subtracting any two zone numbers. For example, when it's 2AM in Hawaii in Zone 2 then it's 7AM in New York in Zone 7, and 2100 (9PM) in Tokyo in Zone 21. Reference source for this program: Standard Time Zone Chart of the World published by the Defense Mapping Agency of the U.S. Government Dept. of Defense. For those interested, this large wall chart depicting alternate colored time zones is available at a very nominal charge (recently $5.50) from: Director DMA Office of Distribution Services ATTN: DDCP Washington, DC 20315-0020 (Check or money order to be made out to the Treasurer of U.S., with notation of the DMA stock number WOBZC76.) The following table shows the correlation of numerical zones designated in this program with those of the DMA chart: WORLD PROGRAM DMA CHART 0 +12 or Y WEST LONGITUDE (WEST OF THE PRIME 1 +11 or X OR GREENWICH MERIDIAN) 2 +1O or W 3 + 9 or V 4 + 8 or U 5 + 7 or T 6 + 6 or S 7 + 5 or R 8 + 4 or Q 9 + 3 or P 1O + 2 or O 11 + 1 or N 12 0 or Z GREENWICH MEAN TIME 13 - 1 or A 14 - 2 or B 15 - 3 or C 16 - 4 or D 17 - 5 or E 18 - 6 or F 19 - 7 or G 2O - 8 or H 21 - 9 or I 22 -1O or K 23 -11 or L 24 -12 or M EAST LONGITUDE (EAST OF THE PRIME 25 -13 OR GREENWICH MERIDIAN)