What is 2023 - 1966?

2023 is a future year, while 1966 is a past year. Here are some events that occurred in these years:

• 1966: The United States sends troops to Vietnam, starting the Vietnam War.
• 2023: There is no specific event in 2023 as it is a speculative future year. However, some predictions for 2023 include the launch of the first manned mission to Mars and the completion of the world's tallest building, the Jeddah Tower in Saudi Arabia.