What is the first day of summer in South America?

Answer 1

In the Northern Hemisphere, based on astronomical definition, summer begins on the day of the June solstice, which is at 1:45 A.M. EDT on June 21, 2009.

While many Western calendars may mark June 21, 2009, as the beginning of summer, note that summer begins on June 20, 2009, at 10:45 P.M. PDT in California.

Answer 2

Monday, June 21 - in the Northern Hemisphere

In the US, Canada, Europe, Central America, Asia:

Monday, June 21, at approximately midnight is the official first day of summer for 2010 in the Northern Hemisphere (Summer solstice).

On that day, the Southern Hemisphere observes the winter solstice and begins their winter season.

In Australia, Southern Africa and South America:

The official date of summer south of the equator (corresponding to the first official day of winter in places north of the equator) would be December 21.

Answer 3

Wednesday, June 20, 2012 is the first day of the astronomical summer in the northern hemisphere as mandated by the International Astronomical Union. This date is generally observed in North America and parts of Europe. In the southern hemisphere, the astronomical summer begins on December 21.

The first day of the climatological summer as mandated by the World Meteorological Organization is June 1 every year in the northern hemisphere and December 1 every year in the southern hemisphere. These dates are observed in Australia, New Zealand, and parts of Europe.

Answer 4

Most people in the United States consider Memorial Day weekend, the three-day weekend that includes the last Monday of May, which is Memorial Day in the U. S., to be the unofficial start of the summer season.

Officially, the four seasons start at the times of the solstices and the equinoxes, which vary from year to year. The June solstice, which is the official time of the beginning of summer in the northern hemisphere (and winter in the southern hemisphere) can be as early as June 19 (as it will be on the west coast of the United States in 2096, assuming the time zone rules remain the same or similar) and as late as June 23 (as it was in New Zealand in 1903).

The June solstice of 2012 was on June 20 at the following times in North America:

• 2:08 PM Hawaii-Aleutian Daylight Saving Time (HADT)
• 3:08 PM Alaska Daylight Saving Time (AKDT) and Metlakatla Time (MeST)
• 4:08 PM Pacific Daylight Saving Time (PDT) and Mountain Standard Time (MST)
• 5:08 PM Mountain Daylight Saving Time (MDT) and Central Standard Time (CST)
• 6:08 PM Central Daylight Saving Time (CDT), Eastern Standard Time (EST) and Colombia Time (COT)
• 7:08 PM Eastern Daylight Saving Time (EDT), Cuba Daylight Saving Time (CDT) and Atlantic Standard Time (AST)
• 8:08 PM Atlantic Daylight Saving Time (ADT)
• 8:38 PM Newfoundland Daylight Saving Time (NDT)
• 9:08 PM Pierre and Miquelon Daylight Saving Time (PMDT) and Western Greenland Summer Time (WGST)
• 11:08 PM Eastern Greenland Summer Time (EGST) and Greenwich Mean Time (GMT)

The June solstice of 2013 will be at the following times in North America:

• June 20 @ 8:03 PM HADT
• June 20 @ 9:03 PM AKDT and MeST
• June 20 @ 10:03 PM PDT and MST
• June 20 @ 11:03 PM MDT and CST
• June 21 @ 12:03 AM Central DT, EST and COT
• June 21 @ 1:03 AM EDT, Cuba DT and AST
• June 21 @ 2:03 AM ADT
• June 21 @ 2:33 AM NDT
• June 21 @ 3:03 AM PMDT and WGST
• June 21 @ 5:03 AM EGST and GMT

Answer 5

The first day of summer in South America (most of the continent, anyway) is on or about December 21st.

Answer 6

December 21st

Answer 7

December 21