July 21 in History: Apollo 11 Moonwalk, First Woman Prime Minister, Belgium and Vostok Record
Study the most important historical events associated with July 21, including Belgium’s National Day, Sirimavo Bandaranaike’s world record, the Apollo 11 Moon walk and the lowest temperature officially recorded by a ground station.
These events are especially useful for questions on European history, Sri Lanka, women leaders, NASA missions, Antarctica, climate records and international observances. Students should remember that the Apollo 11 Lunar Module landed on July 20, while Neil Armstrong’s first step occurred after midnight in Universal Time on July 21.
Quick Facts at a Glance
1. Leopold I Became the First King of the Belgians – 1831
Constitutional Oath of Leopold I
On July 21, 1831, Leopold of Saxe-Coburg and Gotha took the constitutional oath and became the first King of the Belgians.
Belgium had declared its independence from the Netherlands in 1830. The establishment of the monarchy in 1831 was an important step in consolidating the newly independent Belgian state.
Leopold I is commonly described as Belgium’s founding king. He remained on the throne until his death in 1865.
Belgium observes its National Day on July 21 because this was the date on which Leopold I took the constitutional oath. The date was formally established as the country’s National Holiday by a law adopted in 1890.
First King: Leopold I
Constitutional oath: July 21, 1831
Belgium: Important Static GK
2. Sirimavo Bandaranaike Became the World’s First Woman Prime Minister – 1960
A Landmark in Women’s Political Leadership
On July 21, 1960, Sirimavo Bandaranaike assumed office as Prime Minister of Ceylon, the country now known as Sri Lanka.
She became the world’s first woman Prime Minister and the first woman to serve as the elected head of government of a modern country.
Sirimavo Bandaranaike led the Sri Lanka Freedom Party, commonly abbreviated as SLFP. She entered national politics after the death of her husband, former Prime Minister S. W. R. D. Bandaranaike, in 1959.
She served as Prime Minister during three separate periods: from 1960 to 1965, from 1970 to 1977 and from 1994 to 2000.
During her second period in office, Ceylon became a republic in 1972 and adopted the name Sri Lanka.
Country: Ceylon, now Sri Lanka
Date: July 21, 1960
Sri Lanka: Important Static GK
| Topic | Important Fact | Exam Keyword |
|---|---|---|
| Official name | Democratic Socialist Republic of Sri Lanka | South Asia |
| Former name | Ceylon | Name changed in 1972 |
| Administrative capital | Sri Jayawardenepura Kotte | Parliament location |
| Largest city | Colombo | Commercial centre |
| Currency | Sri Lankan Rupee | LKR |
| World record | First country to have a woman Prime Minister | Sirimavo Bandaranaike |
3. Neil Armstrong Became the First Human to Step on the Moon – 1969
Apollo 11 Moon Walk
Neil Armstrong became the first human to step on the Moon at approximately 02:56:15 UTC on July 21, 1969.
Apollo 11 had been launched from Kennedy Space Center on July 16, 1969, using a Saturn V rocket.
The mission carried three astronauts: Neil Armstrong, Edwin “Buzz” Aldrin and Michael Collins.
Armstrong and Aldrin travelled to the lunar surface in the Lunar Module named Eagle. Michael Collins remained in lunar orbit in the Command Module named Columbia.
Eagle landed in the Moon’s Sea of Tranquility on July 20, 1969. Because Armstrong stepped onto the surface after midnight in Universal Time, the first human step is dated July 21 UTC.
Buzz Aldrin later joined Armstrong on the surface. The two astronauts collected lunar samples, photographed the area and conducted scientific experiments.
Apollo 11 returned safely to Earth on July 24, 1969, when Columbia splashed down in the Pacific Ocean.
Armstrong’s first step: July 21, 1969 UTC
International Moon Day: July 20
Apollo 11 Mission Timeline
| Date | Event | Important Detail |
|---|---|---|
| July 16, 1969 | Apollo 11 launched | Saturn V rocket |
| July 20, 1969 | Eagle landed on the Moon | Sea of Tranquility |
| July 21, 1969 UTC | Neil Armstrong stepped onto the Moon | First human on the lunar surface |
| July 21, 1969 UTC | Buzz Aldrin joined Armstrong | Second human on the Moon |
| July 24, 1969 | Apollo 11 returned to Earth | Pacific Ocean splashdown |
4. World’s Lowest Ground-Measured Temperature Recorded – 1983
Vostok Station Recorded −89.2°C
On July 21, 1983, Vostok Station in Antarctica recorded a temperature of −89.2°C, equivalent to approximately −128.6°F.
The World Meteorological Organization recognises this as the world’s lowest temperature recorded by a ground-based weather station.
Vostok is a Russian research station located deep in East Antarctica. Its high elevation, dry atmosphere, long polar night and distance from the moderating influence of the ocean contribute to its extremely low temperatures.
Antarctica is the coldest continent on Earth. Scientists use research stations across the continent to study climate, ice sheets, atmospheric conditions, geology and astronomy.
Satellite instruments have detected lower snow-surface temperatures in parts of Antarctica. However, satellite estimates and direct air-temperature measurements at a weather station belong to different scientific categories.
Location: Vostok Station, Antarctica
Date: July 21, 1983
Antarctica and Climate Record: Static GK
July 21 Quick Revision Table
| Year | Historical Event | Key Fact |
|---|---|---|
| 1831 | Leopold I took Belgium’s constitutional oath | First King of the Belgians |
| 1960 | Sirimavo Bandaranaike became Prime Minister | World’s first woman Prime Minister |
| 1969 | Neil Armstrong stepped onto the Moon | First human on the Moon |
| 1983 | Vostok Station recorded −89.2°C | Official ground-measured world record |
S = Sirimavo Bandaranaike, 1960
M = Moon walk – Apollo 11, 1969
C = Coldest temperature – Vostok, 1983
10 MCQs
Frequently Asked Questions
1. What is the most important space event associated with July 21?
Neil Armstrong became the first human to step onto the Moon at 02:56 UTC on July 21, 1969.
2. Did Apollo 11 land on July 20 or July 21?
Eagle landed on July 20, 1969. Armstrong stepped onto the surface after midnight in Universal Time on July 21.
3. Who was the world’s first woman Prime Minister?
Sirimavo Bandaranaike became Prime Minister of Ceylon, now Sri Lanka, on July 21, 1960.
4. Why is July 21 celebrated as Belgium’s National Day?
Leopold I took the constitutional oath as the first King of the Belgians on July 21, 1831.
5. What is the lowest temperature officially recorded at a ground station?
The record is −89.2°C, measured at Vostok Station in Antarctica on July 21, 1983.
6. Is a satellite surface-temperature estimate the same as a weather-station air temperature?
No. Satellite instruments estimate surface temperature, while weather stations directly measure air temperature under defined meteorological conditions.
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Official Sources and References
- The Belgian Monarchy – Belgium National Day
- The Belgian Monarchy – Leopold I and the Belgian Monarchy
- European Union – Belgium Country Profile
- Parliament of Sri Lanka – Sirimavo Bandaranaike
- Prime Minister’s Office of Sri Lanka – Former Prime Ministers
- Sri Lanka Ministry of Foreign Affairs – National Profile
- NASA – Apollo 11 Mission
- NASA – Apollo 11 Mission Overview
- NASA – Neil Armstrong’s First Step Timeline
- United Nations – International Moon Day
- World Meteorological Organization – Vostok Temperature Record
- Australian Antarctic Program – Antarctic Weather Records
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