China'svictory over Japancommemoration related observances:

Armed Forces Day (Republic of China), V-J Day(People's Republic of China)

Commemorative observances in China mark the victory over Japan in World War II with Armed Forces Day in the Republic of China and V-J Day in the People’s Republic of China.
September 3 is the anniversary of China's victory over Japan in 1945, ending years of conflict during the Second Sino-Japanese War. In the Republic of China (Taiwan) it is observed as Armed Forces Day to honor military service and sacrifice. In the People's Republic of China it is known as V-J Day, commemorating Japan's formal surrender. Ceremonies include military parades, flag-raising events, wreath-laying, and memorial services. The day serves as a reminder of national resilience and the importance of peace and remembrance in Chinese society.
victory over Japan Armed Forces Day (Republic of China) V-J Day People's Republic of China

Feast of San Marino and the Republic, celebrates the foundation of theRepublic of San Marinoin 301.

San Marino's national feast day celebrates the legendary foundation of the world’s oldest republic in the year 301.
On September 3 San Marino observes its national feast day, commemorating its founding by Saint Marinus in 301 A.D. According to tradition, Marinus established a small Christian community on Mount Titano, which grew into the republic. Festivities include colorful parades, traditional music, folk dances, and the raising of the national flag. Citizens and visitors gather in historic squares to enjoy local cuisine, craft markets, and cultural performances. The celebration honors San Marino's enduring independence and rich heritage as the world's oldest surviving republic.
Feast of San Marino and the Republic Republic of San Marino

Flag Day (Australia)

Australia’s Flag Day commemorates the first raising of the national flag on September 3, 1901.
Flag Day is observed annually on September 3 to mark the first time the Australian national flag was hoisted in Brisbane in 1901. The flag design was selected through a public competition following the federation of the Australian colonies. Ceremonies across the country feature flag-raising, parades, and educational programs on flag etiquette. Communities are encouraged to display the flag on buildings, homes, and public spaces. The day fosters national pride and reflects on Australia’s unity and identity under its symbolic banner.
Flag Day (Australia)

Independence Day, celebrates the second independence ofQatarfrom the United Kingdom in 1971.

Qatar National Day celebrates the country’s declaration of independence from the United Kingdom on September 3, 1971.
September 3 is Qatar National Day, marking the formal end of British protectorate status in 1971. The holiday honors the leadership of Sheikh Jassim bin Mohammed Al Thani and the nation’s journey to sovereignty. Festivities include grand parades, spectacular fireworks, cultural performances, and traditional dances. Public buildings and landmarks are illuminated in Qatar’s national colors, and citizens display flags with pride. The day highlights Qatar’s rapid development, heritage, and unity as a sovereign state in the Gulf region.
Independence Day Qatar

Levy Mwanawasa Day(Zambia)

Levy Mwanawasa Day honors the legacy and leadership of Zambia’s third president, celebrated on his birthday.
Observed on September 3 in Zambia, Levy Mwanawasa Day commemorates the birth of the nation’s third president. President Mwanawasa is remembered for his anti-corruption initiatives and efforts to strengthen democratic governance. The day features official ceremonies, wreath-laying at his memorial, and speeches by government officials. Schools and civil society organizations host seminars and exhibitions highlighting his vision for economic growth and social development. Zambians reflect on his contributions and renewal of commitment to transparency and the rule of law.
Levy Mwanawasa Day Zambia

Armed Forces Day (Republic of China)

Armed Forces Day in the Republic of China honors the service and sacrifice of Taiwan’s military personnel.
Observed annually on September 3, Armed Forces Day commemorates the founding and achievements of the Republic of China’s military. Established in 1949, the holiday pays tribute to those who served during the Chinese Civil War and afterwards. Official ceremonies include parades, military displays, and wreath-laying at memorials across Taiwan. Government leaders and veterans gather to recognize heroism and reaffirm national defense commitments. Educational programs and exhibitions highlight the history and modernization of Taiwan’s armed forces. The day fosters patriotism and honors the ongoing dedication of service members to national security.
Armed Forces Day (Republic of China)

V-J Day(People's Republic of China)

V-J Day in the People’s Republic of China celebrates Japan’s surrender in World War II on September 3, 1945.
V-J Day marks the official end of World War II in Asia following Japan’s surrender ceremonies on September 3, 1945. Due to time zone differences, China observes the capitulation on September 3 instead of August 15. Designated a national holiday in 2014, the day includes official government ceremonies and moment-of-silence commemorations. Wreath-laying at the Monument to the People's Heroes in Beijing is a focal point of observance. Media programs and educational events reflect on the war’s impact and honor the memory of those who fought. The holiday reinforces themes of peace, remembrance, and national unity in China.
V-J Day People's Republic of China