November 3 has several notable historical, cultural, and contemporary significance marks, spanning world history, national observances, and notable anniversaries. Key highlights

• Historical events
  • Henry VIII’s Act of Supremacy (1534) established the monarch as the supreme head of the Church of England, signaling the start of the English Reformation. This reshaped English religion and politics for centuries.
  • The Times of India, one of India's oldest and most influential English-language newspapers, was founded (1838), marking a milestone in Indian media history.
  • The First Opium War began (1839), a pivotal conflict between China and Britain that had lasting effects on East–West relations and China’s modern history.
  • The American Continental Army’s disbandment is traditionally dated to 1783, marking the end of the Revolutionary War period and a transition to a new national framework in the United States.
• Modern anniversaries and observances
  • Various nations and organizations commemorate diverse holidays and observances on November 3, including National Sandwich Day in the United States in some years, and other country-specific days and cultural observances.
  • Notable births and deaths are associated with this date in different years, including influential figures in politics, science, arts, and culture.
• Notable recent events
  • In the 20th century, significant events such as space exploration milestones, political developments, and cultural releases have occurred on or around this date, depending on the year and context.

If you’d like, I can tailor the highlights to a specific country, era, or theme (e.g., religious history, media history, or science milestones) and pull out the most relevant events for your interests.