UTC is as follows. U=No Ultrasound (A cleaning machine. Not recommended -especially for stones with cracks). T=Avoid Temperature Extreme -Sudden changes C=Avoid Chemicals, perfume, hairpray. Put on jewelry last. Use perfume oils instead of alcohol sprays.Don't wear in hot tub or pool. Remove to safe place when cleaning. that's the care instructions
When UTC 925 is stamped on jewelry it means that the metal is 925 hundredths of the metal. The UTC means that due to the purity of the metal it should not be worn during ultrasounds, in extreme or sudden changing temperatures, or when it could come into contact with chemicals such as hairspray, perfumes or cleaners.
It means that the tasking is for a medical UTC.
The time zones used in Canada are UTC-8, UTC-7, UTC-6, UTC-5, UTC-4, UTC-3:30, UTC-3 and UTC-2:30.
What does this mean in jewelry?
Not counting Daylight Saving Time (a.k.a. Summer Time), there are 39 different time offsets used around the world: UTC-11, UTC-10, UTC-9:30, UTC-9, UTC-8, UTC-7, UTC-6, UTC-5, UTC-4:30, UTC-4, UTC-3:30, UTC-3, UTC-2, UTC-1, UTC, UTC+1, UTC+2, UTC+3, UTC+3:30, UTC+4, UTC+4:30, UTC+5, UTC+5:30, UTC+5:45, UTC+6, UTC+6:30, UTC+7, UTC+8, UTC+8:45, UTC+9, UTC+9:30, UTC+10, UTC+10:30, UTC+11, UTC+11:30, UTC+12, UTC+12:45, UTC+13 and UTC+14.
Here are all of the Daylight Saving Time/ Summer Time beginning and ending dates for 2013: Albania . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Andorra . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Australia . . . Apr. 7th: UTC+11 --> UTC+10 . . . . . . . . . . .UTC+10.5 --> UTC+9.5 . . . Oct. 6th: UTC+10 --> UTC+11 except Queensland . . . . . . . . . . .UTC+9.5 --> UTC+10.5 except Northern Territory Austria . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Azerbaijan . . . Mar. 31st: UTC+4 --> UTC+5 . . . Oct. 27th: UTC+5 --> UTC+4 Azores (Por.) . . . Mar. 31st: UTC-1 --> UTC . . . Oct. 27th: UTC --> UTC-1 Bahamas . . . Mar. 10th: UTC-5 --> UTC-4 . . . Nov. 3rd: UTC-4 --> UTC-5 Belgium . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Bermuda . . . Mar. 10th: UTC-4 --> UTC-3 . . . Nov. 3rd: UTC-3 --> UTC-4 Bosnia & Herzegovina . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Brazil . . . Feb. 17th: UTC-3 --> UTC-4 in Matto Grosso & Matto Grosso do Sul . . . . . . . . . . . .UTC-2 --> UTC-3 all except Fernando de Noronha . . . Oct. 20th: UTC-4 --> UTC-3 in Matto Grosso & Matto Grosso do Sul . . . . . . . . . . . .UTC-3 --> UTC-2 in Tocantins, Espirito Santo, Distrito Federal, Goias, Minas Gerais, Parana, Rio de Janeiro, Rio Grande do Sul, Santa Catarina & São Paulo Bulgaria . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Canada . . . Mar. 10th: UTC-3.5 --> UTC-2.5 . . . . . . . . . . . .UTC-4 --> UTC-3 except eastern end of Quebec . . . . . . . . . . . .UTC-5 --> UTC-4 except Southampton Island & parts of Ontario . . . . . . . . . . . .UTC-6 --> UTC-5 except Saskatchewan . . . . . . . . . . . .UTC-7 --> UTC-6 except parts of British Columbia . . . . . . . . . . . .UTC-8 --> UTC-7 . . . Nov. 3rd: UTC-2.5 --> UTC-3.5 . . . . . . . . . . . UTC-3 --> UTC-4 . . . . . . . . . . . UTC-4 --> UTC-5 except eastern end of Quebec . . . . . . . . . . . UTC-5 --> UTC-6 except Southampton Island & parts of Ontario . . . . . . . . . . . UTC-6 --> UTC-7 except Saskatchewan . . . . . . . . . . . UTC-7 --> UTC-8 except parts of British Columbia Canary Islands (Sp) . . . Mar. 31st: UTC --> UTC+1 . . . Oct. 27th: UTC+1 --> UTC Chatham Island (NZ) . . . Apr. 7th: UTC+13.75 --> UTC+12.75 . . . Sep. 29th: UTC-12.75 --> UTC+13.75 Chile . . . Mar. 10th: UTC-3 --> UTC-4 . . . Oct. 13th: UTC-4 --> UTC-3 Croatia . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Cuba . . . Mar. 10th: UTC-5 --> UTC-4 . . . Nov. 3rd: UTC-4 --> UTC-5 Cyprus . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Czech Republic . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Denmark . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Easter Island (Chile) . . . Mar. 10th: UTC-5 --> UTC-6 . . . Oct. 13th: UTC-6 --> UTC-5 Estonia . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Fiji: . . . Jan. 20th: UTC+13 --> UTC+12 . . . Oct. 20th: UTC+12 --> UTC+13 Finland . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 France . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Germany . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Gibraltar (UK) . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Greece . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Greenland (Den.) . . . Mar. 31st: UTC --> UTC+1 . . . . . . . . . . . .UTC-1 --> UTC . . . . . . . . . . . .UTC-3 --> UTC-2 . . . Oct. 27th: UTC+1 --> UTC . . . . . . . . . . . UTC --> UTC-1 . . . . . . . . . . . UTC-2 --> UTC-3 . . . (The Thule area follows the same schedule as Bermuda.) Hungary . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Iran . . . Mar. 22nd: UTC+3.5 --> UTC+4.5 . . . Sep. 22nd: UTC+4.5 --> UTC+3.5 Ireland . . . Mar. 31st: UTC --> UTC+1 . . . Oct. 27th: UTC+1 --> UTC Israel . . . Mar. 29th: UTC+2 --> UTC+3 . . . Oct. 6th: UTC+3 --> UTC+2 Italy . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Jordan . . . Oct. 25th: UTC+3 --> UTC+2 Kosovo . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Latvia . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Lebanon . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Libya . . . Mar. 29th: UTC+1 --> UTC+2 . . . Oct. 25th: UTC+2 --> UTC+1 Liechtenstein . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Lithuania . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Lord Howe Island (Aus.) . . . Apr. 7th: UTC+11 --> UTC+10.5 . . . Oct. 6th: UTC+10.5 --> UTC+11 Luxembourg . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Macedonia . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Madeira Islands (Por.) . . . Mar. 31st: UTC --> UTC+1 . . . Oct. 27th: UTC+1 --> UTC Malta . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Mexico . . . Apr. 7th: UTC-6 --> UTC-5 . . . . . . . . . . .UTC-7 --> UTC-6 except Sonora . . . . . . . . . . .UTC-8 --> UTC-7 . . . Oct. 27th: UTC-5 --> UTC-6 . . . . . . . . . . . UTC-6 --> UTC-7 . . . . . . . . . . . UTC-7 --> UTC-8 except Sonora . . . (Note: Acuna, Anahuac, Ciudad Juarez, Metamoros, Mexicali, Nuevo Laredo, Ojinaga, Piedras Negras, Reynosa y Tijuana follow the U.S. schedule.) Moldova . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Monaco . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Montenegro . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Morocco . . . Apr. 28th: UTC --> UTC+1 . . . Jul. 9th: UTC+1 --> UTC . . . Aug. 8th: UTC --> UTC+1 . . . Sep. 29th: UTC+1 --> UTC Namibia . . . Apr. 7th: UTC+2 --> UTC+1 . . . Sep. 1st: UTC+1 --> UTC+2 Netherlands . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 New Zealand . . . Apr. 7th: UTC+13 --> UTC+12 . . . Sep. 29th: UTC+12 --> UTC+13 Norway . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Paraguay . . . Apr. 14th: UTC-3 --> UTC-4 . . . Oct. 6th: UTC-4 --> UTC-3 Poland . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Portugal . . . Mar. 31st: UTC --> UTC+1 . . . Oct. 27th: UTC+1 --> UTC Romania . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Saint-Pierre & Miquelon Islands (Fr) . . . Mar. 10th: UTC-3 --> UTC-2 . . . Nov. 3rd: UTC-2 --> UTC-3 Samoa . . . Apr. 7th: UTC+14 --> UTC+13 . . . Sep. 29th: UTC+13 --> UTC+14 San Marino . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Serbia . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Slovakia . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Slovenia . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Spain . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Sweden . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Switzerland . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1 Syria . . . Mar. 29th: UTC+2 --> UTC+3 . . . Oct. 25th: UTC+3 --> UTC+2 Turkey . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 Turks & Caicos Islands . . . Mar. 10th: UTC-5 --> UTC-4 . . . Nov. 3rd: UTC-4 --> UTC-5 Ukraine . . . Mar. 31st: UTC+2 --> UTC+3 . . . Oct. 27th: UTC+3 --> UTC+2 United Kingdom . . . Mar. 31st: UTC --> UTC+1 . . . Oct. 27th: UTC+1 --> UTC United States . . . Mar. 10th: UTC-5 --> UTC-4 . . . . . . . . . . . .UTC-6 --> UTC-5 . . . . . . . . . . . .UTC-7 --> UTC-6 except most of Arizona . . . . . . . . . . . .UTC-8 --> UTC-7 except Metlakatla AK . . . . . . . . . . . .UTC-9 --> UTC-8 . . . . . . . . . . . .UTC-10 --> UTC-9 Aleutian Islands only . . . Nov. 3rd: UTC-4 --> UTC-5 except Puerto Rico & the Virgin Islands . . . . . . . . . . . UTC-5 --> UTC-6 . . . . . . . . . . . UTC-6 --> UTC-7 . . . . . . . . . . . UTC-7 --> UTC-8 except Arizona . . . . . . . . . . . UTC-8 --> UTC-9 except Metlakatla AK . . . . . . . . . . . UTC-9 --> UTC-10 Uruguay . . . Mar. 10th: UTC-2 --> UTC-3 . . . Oct. 6th: UTC-3 --> UTC-2 Vatican City . . . Mar. 31st: UTC+1 --> UTC+2 . . . Oct. 27th: UTC+2 --> UTC+1
UTC - 12 hrs., UTC - 11 hrs., UTC - 10 hrs., UTC - 9.5 hrs., UTC - 9 hrs., UTC - 8 hrs., UTC - 7 hrs., UTC - 6 hrs., UTC - 5 hrs., UTC - 4.5 hrs., UTC - 4 hrs., either UTC - 3.5 hrs. or UTC - 2.5 hrs., UTC - 3 hrs., UTC - 2 hrs., UTC - 1 hr., UTC, UTC + 1 hr., UTC + 2 hrs., UTC + 3 hrs., sometimes UTC + 3.5 hrs., UTC + 4 hrs., UTC + 4.5 hrs., UTC + 5 hrs., UTC + 5.5 hrs., UTC + 5.75 hrs., UTC + 6 hrs., UTC + 6.5 hrs., UTC + 7 hrs., UTC + 8 hrs., UTC + 8.75 hrs., UTC + 9 hrs., UTC + 9.5 hrs., UTC + 10 hrs., UTC + 10.5 hrs., UTC + 11 hrs., UTC + 11.5 hrs., UTC + 12 hrs., either UTC + 12.75 hrs. or UTC + 13.75 hrs., UTC + 13 hrs. and UTC + 14 hrs.
The following island nations and territories change their clocks twice per year for Daylight Saving Time, a.k.a. Summer Time:Easter Island (UTC-6/UTC-5)Bahamas (UTC-5/UTC-4)Cuba (UTC-5/UTC-4)Haiti (UTC-5/UTC-4) (The Dominican half of Hispaniola stays on UTC-4 all year.)Bermuda (UTC-4/UTC-3)Greenland (UTC-4/UTC-3, UTC-3/UTC-2, UTC-1/UTC & UTC)St.-Pierre-et-Miquelon (UTC-3/UTC-2)Azores (UTC-1/UTC)Faroe Islands (UTC/UTC+1)Madeira Islands (UTC/UTC+1)Canary Islands (UTC/UTC+1)Svalbard & Jan Mayan (UTC+1/UTC+2)Cyprus (UTC+2/UTC+3)Lord Howe Island (UTC+10.5/UTC+11)Fiji (UTC+12/UTC+13)New Zealand (UTC+12/UTC+13)Chatham Islands (UTC+12.75/UTC+13.75)Samoa (UTC+13/UTC+14)
Auburn, New South Wales, Australia : UTC+10/UTC+11Auburn, South Australia, Australia : UTC+9:30/UTC+10:30Auburn, Victoria, Australia : UTC+10/UTC+11Auburn, Nova Scotia, Canada : UTC-4/UTC-3Auburn, Ontario, Canada : UTC-5/UTC-4Auburn, Kilkenny West, Ireland : UTC/UTC+1Auburn, Alabama, USA : UTC-6/UTC-5Auburn, California, USA : UTC-8/UTC-7Auburn, Colorado, USA : UTC-7/UTC-6Auburn, Georgia, USA : UTC-5/UTC-4Auburn, Illinois, USA : UTC-6/UTC-5Auburn, Indiana, USA : UTC-5/UTC-4Auburn, Iowa, USA : UTC-6/UTC-5Auburn, Kansas, USA : UTC-6/UTC-5Auburn, Kentucky, USA : UTC-6/UTC-5Auburn, Maine, USA : UTC-5/UTC-4Auburn, Massachusetts, USA : UTC-5/UTC-4Auburn, Michigan, USA : UTC-5/UTC-4Auburn, Missouri, USA : UTC-6/UTC-5Auburn, Nebraska, USA : UTC-6/UTC-5Auburn, New Hampshire, USA : UTC-5/UTC-4Auburn, New Jersey, USA : UTC-5/UTC-4Auburn, New York, USA : UTC-5/UTC-4Auburn, North Carolina, USA : UTC-5/UTC-4Auburn, Oregon, USA : UTC-8/UTC-7Auburn, Pennsylvania, USA : UTC-5/UTC-4Auburn, Rhode Island, USA : UTC-5/UTC-4Auburn, Texas, USA : UTC-6/UTC-5Auburn, Washington, USA : UTC-8/UTC-7Auburn, West Virginia, USA : UTC-5/UTC-4Auburn, Wisconsin, USA : UTC-6/UTC-5Auburn, Wyoming, USA : UTC-7/UTC-6
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The U. S. time zones are UTC-11, UTC-10, UTC-9, UTC-8, UTC-7, UTC-6, UTC-5, UTC-4 and UTC+10. The African time zones are UTC, UTC+1, UTC+2 and UTC+3.