Important National and International Days

National Technology Day is observed on May 11 in India to commemorate the Pokhran nuclear tests of 1998 (Operation Shakti). On this day, India successfully conducted five nuclear tests, establishing itself as a nuclear weapons state.

International Mother Language Day is observed annually on 21 February and was proclaimed by UNESCO in 1999 to promote linguistic and cultural diversity. The day commemorates the language movement in Bangladesh where students sacrificed their lives for their mother tongue.

International Mother Language Day has always been observed on February 21 since its inception in 2000. The date commemorates the 1952 language movement in Bangladesh and has never been changed to February 20.

The Islamic calendar is lunar-based, consisting of approximately 354 days - about 11 days shorter than the Gregorian solar calendar. This is because it follows the lunar cycle (12 lunar months), which is approximately 354.37 days. The 365-day year is based on the solar calendar.

September 24 is observed as International Girl Child Day to create awareness about gender equality and the rights of the girl child. The day focuses on highlighting gender inequalities and promoting opportunities for girls. It was established by the United Nations to address discrimination and violence against girls.

Saint Valentine was a Christian priest who was martyred on February 14th around 270 AD for secretly performing marriages for young couples against Emperor Claudius II's decree, which forbade young men from marrying to ensure they could serve as soldiers. His defiance of the emperor and sacrifice for love became the foundation of Valentine's Day celebrations. The other options - birth, personal marriage, or arranging marriages - are not the historically accepted reasons for the celebration.

Tulsi Vivah is a Hindu festival that marks the ceremonial marriage of the holy basil plant (Tulsi) to Lord Vishnu or Krishna. It begins on Ekadashi (the 11th lunar day) of Kartik Shukla Paksha and continues until Kartik Poornima (full moon). Kartik Poornima itself is a separate festival, and the 14th day would be too late.

World Population Day is observed annually on July 11th. It was established by the United Nations Development Programme in 1989 to raise awareness about population issues and their impact on development and the environment.

World Consumer Rights Day is observed on March 15th annually. It commemorates the 1962 speech by US President John F. Kennedy outlining four basic consumer rights, and was first observed in 1983. March 15 now marks global consumer protection awareness.

International Youth Day is celebrated on August 12th every year. The United Nations designated this day in 1999 to focus on youth issues, celebrate their potential, and promote their role in society. Each year has a specific theme addressing youth challenges.

World Meteorological Day is observed on March 23rd annually. It commemorates the 1950 establishment of the World Meteorological Organization and highlights weather's vital role in safety, climate, and water. The date marks the WMO convention's coming into force.

International Women's Day is observed annually on March 8th. This date was chosen to commemorate the 1908 garment workers' strike in New York and was officially adopted by the United Nations in 1975. The other options (Jan 6, Feb 7, Aug 9) are not associated with this global celebration.

The first official International Women's Day was celebrated on March 19, 1911, in Austria, Denmark, Germany, and Switzerland. Over a million people rallied to demand women's rights to work, vote, and hold public office. The date was later standardized to March 8th, but the inaugural observance was in 1911.

Different countries have designated different dates to honor women. For example, Vietnam celebrates Women's Day on October 20, while South Africa observes National Women's Day on August 9. This reflects the varied historical and cultural contexts of women's movements worldwide.

International Women's Day serves both purposes: it honors the historical struggle of the suffragettes who fought for women's right to vote, AND it celebrates contemporary women's achievements across all fields. The day recognizes both the historical movement and ongoing progress toward gender equality.