2003 instance of calendar year
2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar, the 2003rd year of the Common Era (CE) and Anno Domini (AD) designations, the 3rd  year of the 3rd millennium and the 21st century, and the  4th   year of the 2000s decade.  
2003 was designated the International Year of the Fresh water.In 2003, a United States-led coalition invaded Iraq, starting the Iraq War.July
July–August – 2003 European heat wave: Europe experiences its hottest summer in over five centuries.
July 1 – Tesla Inc., the American electric car company, is founded by Martin Eberhard and Marc Tarpenning in San Carlos, California.
July 2 – The International Olympic Committee awards Vancouver the right to host the 2010 Winter Olympics.
July 4 – 2003 Quetta mosque bombing: Islamist militants attack a Shia mosque in Quetta, Pakistan, killing at least 44 people.
July 5 – Severe acute respiratory syndrome is declared to be contained by the World Health Organization.
July 6
The 70-meter Eupatoria Planetary Radar sends a METI message Cosmic Call 2 to five stars: Hip 4872, HD 245409, 55 Cancri, HD 10307 and 47 Ursae Majoris, that will arrive at these stars in 2036, 2040, May 2044, September 2044 and 2049 respectively.
Dennis Schmitt discovers the island of 83-42, a candidate for being the northernmost point of land.
July 10 – The existence of PSR B1620−26 b, the oldest known exoplanet in the galaxy, is confirmed using observations from the Hubble Space Telescope.
July 13 – The Iraqi Governing Council is created by the United States as an ethnically diverse provisional government of Iraq.
July 14 – Robert Novak identifies Valerie Plame as a covert CIA agent, initiating a scandal known as the Plame affair.
July 16 – Major Fernando Pereira leads a failed coup in São Tomé and Príncipe.
July 18 – The Convention on the Future of Europe finishes its work and proposes the first European Constitution.
July 24 – The Regional Assistance Mission to the Solomon Islands, led by Australia, begins after ethnic violence engulfs the island country.
July 27 – Oakwood mutiny: Philippine military officers lead approximately 300 soldiers a failed coup.
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