paragraph_text: June 17–19, 2010During Petersburg Economic Forum, President of the Russian Federation D.A. Medvedev visited the exhibit of the Commission on modernization and technological development of the economy of Russia, where he watched the demonstration of Corporation’s developments in the field of 3D TV, namely, the first Russian 3D channel – 3DV.

paragraph_text: Within southern California are two major cities, Los Angeles and San Diego, as well as three of the country's largest metropolitan areas. With a population of 3,792,621, Los Angeles is the most populous city in California and the second most populous in the United States. To the south and with a population of 1,307,402 is San Diego, the second most populous city in the state and the eighth most populous in the nation.

paragraph_text: Sugar Hill is a city in northern Gwinnett County in the U.S. state of Georgia and is part of the Atlanta metropolitan area. The population was 18,522 as of the 2010 census, making it the fourth-largest city in Gwinnett County. As of 2015, the estimated population was 21,747.

paragraph_text: Oklahoma City is the capital and largest city of the state of Oklahoma. The county seat of Oklahoma County, the city ranks 27th among United States cities in population. The population grew following the 2010 Census, with the population estimated to have increased to 620,602 as of July 2014. As of 2014, the Oklahoma City metropolitan area had a population of 1,322,429, and the Oklahoma City-Shawnee Combined Statistical Area had a population of 1,459,758 (Chamber of Commerce) residents, making it Oklahoma's largest metropolitan area. Oklahoma City's city limits extend into Canadian, Cleveland, and Pottawatomie counties, though much of those areas outside of the core Oklahoma County area are suburban or rural (watershed). The city ranks as the eighth-largest city in the United States by land area (including consolidated city-counties; it is the largest city in the United States by land area whose government is not consolidated with that of a county or borough).

paragraph_text: Tucson is located 118 mi (190 km) southeast of Phoenix and 60 mi (97 km) north of the United States - Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 980,263. In 2009, Tucson ranked as the 32nd largest city and 52nd largest metropolitan area in the United States. A major city in the Arizona Sun Corridor, Tucson is the largest city in southern Arizona, the second largest in the state after Phoenix. It is also the largest city in the area of the Gadsden Purchase. As of 2015, The Greater Tucson Metro area has exceeded a population of 1 million.

paragraph_text: Sacramento (/ ˌsækrəˈmɛntoʊ / SAK - rə - MEN - toh, locally also / ˌsækrəˈmɛnoʊ / SAK - rə - MEN - oh; Spanish: (sakɾaˈmento)) is the capital city of the U.S. state of California and the seat of Sacramento County. It is at the confluence of the Sacramento River and the American River in the northern portion of California's expansive Central Valley, known as the Sacramento Valley. Its estimated 2016 population of 493,025 makes it the sixth - largest city in California, the fastest - growing big city in the state, and the 35th largest city in the United States. Sacramento is the cultural and economic core of the Sacramento metropolitan area, which includes seven counties with a 2010 population of 2,414,783. Its metropolitan area is the fourth largest in California after the Greater Los Angeles area, the San Francisco Bay Area, and the San Diego metropolitan area, and is the 27th largest in the United States. In 2002, the Civil Rights Project at Harvard University conducted for Time magazine named Sacramento ``America's Most Diverse City ''.

paragraph_text: Kalona is a city in Washington County, Iowa, United States. It is part of the Iowa City, Iowa Metropolitan Statistical Area. The population was 2,363 at the 2010 census. Kalona is the second largest city in Washington County.

paragraph_text: Saint Petersburg (Russian: Санкт - Петербу́рг, tr. Sankt - Peterburg, IPA: (ˈsankt pjɪtjɪrˈburk) (listen)) is Russia's second - largest city after Moscow, with 5 million inhabitants in 2012, part of the Saint Petersburg agglomeration with a population of 6.2 million (2015). An important Russian port on the Baltic Sea, it has a status of a federal subject (a federal city).

paragraph_text: The city proper is home to less than one-thirteenth of the population of South Florida. Miami is the 42nd-most populous city in the United States. The Miami metropolitan area, which includes Miami-Dade, Broward and Palm Beach counties, had a combined population of more than 5.5 million people, ranked seventh largest in the United States, and is the largest metropolitan area in the Southeastern United States. As of 2008[update], the United Nations estimates that the Miami Urban Agglomeration is the 44th-largest in the world.

paragraph_text: St. Petersburg is the second - largest city in the Tampa Bay Area, after Tampa. Together with Clearwater, these cities comprise the Tampa -- St. Petersburg -- Clearwater Metropolitan Statistical Area, the second - largest in Florida with a population of around 2.8 million. St. Petersburg is located on a peninsula between Tampa Bay and the Gulf of Mexico, and is connected to mainland Florida to the north.

paragraph_text: Atlanta (/ ætˈlæntə /) is the capital and most populous city of the state of Georgia in the United States. With an estimated 2016 population of 472,522, it is the cultural and economic center of the Atlanta metropolitan area, home to 5.8 million people and the ninth - largest metropolitan area in the United States. Atlanta is the seat of Fulton County and a small portion of the city extends eastward into DeKalb County.

paragraph_text: Charleston is the oldest and largest city in the U.S. state of South Carolina, the county seat of Charleston County, and the principal city in the Charleston -- North Charleston -- Summerville Metropolitan Statistical Area. The city lies just south of the geographical midpoint of South Carolina's coastline and is located on Charleston Harbor, an inlet of the Atlantic Ocean formed by the confluence of the Ashley and Cooper rivers. Charleston had an estimated population of 134,385 in 2016. The estimated population of the Charleston metropolitan area, comprising Berkeley, Charleston, and Dorchester counties, was 761,155 residents in 2016, the third - largest in the state and the 78th - largest metropolitan statistical area in the United States.

paragraph_text: Ottawa (/ ˈɒtəwə / (listen), / - wɑː /; French pronunciation: ​ (ɔtawa)) is the capital city of Canada. It stands on the south bank of the Ottawa River in the eastern portion of southern Ontario. Ottawa borders Gatineau, Quebec; the two form the core of the Ottawa -- Gatineau census metropolitan area (CMA) and the National Capital Region (NCR). As of 2016, Ottawa had a city population of 934,243 and a metropolitan population of 1,323,783 making it the fourth - largest city and the fifth - largest CMA in Canada.

paragraph_text: The Chicago metropolitan area, or Chicagoland, is the metropolitan area that includes the city of Chicago, Illinois, and its suburbs. With an estimated population of 9.4 million people, it is the third largest metropolitan area in the United States.

paragraph_text: Madrid (/ məˈdrɪd /, Spanish: (maˈðɾið), locally (maˈðɾi (θ))) is the capital of Spain and the largest municipality in both the Community of Madrid and Spain as a whole. The city has almost 3.166 million inhabitants with a metropolitan area population of approximately 6.5 million. It is the third - largest city in the European Union (EU) after London and Berlin, and its metropolitan area is the third - largest in the EU after those of London and Paris. The municipality itself covers an area of 604.3 km (233.3 sq mi).

paragraph_text: The Phoenix Metropolitan Area -- often referred to as the Valley of the Sun, the Salt River Valley or Metro Phoenix -- is a metropolitan area, centered on the city of Phoenix, that includes much of the central part of the U.S. State of Arizona. The United States Census Bureau designates the area as the Phoenix - Mesa - Scottsdale Metropolitan Statistical Area (MSA), defining it as Maricopa and Pinal counties. As of the Census Bureau's 2015 population estimates, Metro Phoenix had 4,574,351 residents, making it the 12th largest Metropolitan Area in the nation by population. The gross domestic product of the Phoenix Metropolitan Area was $215 billion in 2014, 15th largest amongst metro areas in the United States.

paragraph_text: The population of Paris in its administrative city limits was 2,241,346 in January 2014. This makes Paris the fifth largest municipality in the European Union, following London, Berlin, Madrid and Rome. Eurostat, the statistical agency of the EU, places Paris (6.5 million people) second behind London (8 million) and ahead of Berlin (3.5 million), based on the 2012 populations of what Eurostat calls "urban audit core cities". The Paris Urban Area, or "unité urbaine", is a statistical area created by the French statistical agency INSEE to measure the population of built-up areas around the city. It is slightly smaller than the Paris Region. According to INSEE, the Paris Urban Area had a population of 10,550,350 at the January 2012 census, the most populous in the European Union, and third most populous in Europe, behind Istanbul and Moscow. The Paris Metropolitan Area is the second most populous in the European Union after London with a population of 12,341,418 at the Jan. 2012 census.

paragraph_text: The Dalles / ˈdælz / is the county seat and largest city of Wasco County, Oregon, United States. The population was 13,620 at the 2010 census, and is the largest city on the Oregon side along the Columbia River outside the Portland Metropolitan area.

paragraph_text: Miramar is a city near the southeastern tip of the state of Tamaulipas in Mexico. It is the largest city in the municipality of Altamira and third largest of the Tampico Metropolitan Area. The city had a 2010 census population of 118,614, the seventh-largest community in the state, having passed Río Bravo since the previous census.

paragraph_text: Snow cover (averaging 3 -- 5 months per year) is formed at the beginning of November and melts in beginning of April, but in recent years snow cover has lasted shorter than usual. For example, in the winter of 2006 -- 2007 the snow cover did n't form until the end of January, and melted at the beginning of March; in 2007 -- 2008, the snow cover melted at the end of February, and in the 2008 -- 2009 winter, snow cover did n't form until the end of December, which is one month later than usual. Yet in 2011 - 2012 it melted in the middle of April.

Question: When does it start to snow in the largest metropolitan area as measured by population of the country holding the exhibit of the Commission on modernization and technological development?
Answer: the beginning of November