
This December 25, we wish you a very Merry Christmas! While you are in the mood to enjoy, we bring some of the most beautiful and happy events of history. From the first Christmas to be celebrated to the discovery of Hailey’s comet, there is a treat for everyone. So sit back and relax. Take a journey with us through some of the most significant events of this day.

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352- First Christmas day celebration
There is evidence about the holiday celebrations before 352 AD. However, a Christian Emperor, Constantine was first to celebrate it officially. Before he conquered Rome, December 25 celebrations had a different reasons. It was to honor the’ Unconquered Sun’. When Gregorian Calendar replaced Julian Calender, this changed.. This interesting to know the birth of Jesus is actually in January 7. Both Calendars differ from each other for eleven days. Now, January 7 is Old Christmas Day.
1741- ‘Celsius’ unit introduce
A scale with ice as zero degree and boiling water as one hundred degrees. While this may seem very basic, it was a breakthrough in 1741. Before this, thermometers measure temperature with alcohol and mercury. Interestingly, Andres Celsius was also known to see changes in Magnetic fields. Since, Celsius degree is similar to Kelvin, a popular unit used in Labs. Its discovery was a major achievement. While Andres Celsius is not alive, his legacy remains with us forever.
1758- Discovery of Hailey’s Comet
Hailey’s comet crosses the Earth every seventy-six years. We will see it next in 2061. It was in 1716, when Edmund Hailey observed the repetitive pattern of this comet. He used Newton’s law of gravitation and Kepler’s Planetary motion. He predicted that it would come back in 1758. His words,
“Hence I dare venture to foretell, that it will return again in the year 1758.”
While he died in 1742, his prediction did come true.In March 1759, comet was named after Edmund Hailey.

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1947- Taiwan accepts Constitution
Taiwan celebrates December 25 as ‘Constitution Day’. In 1947, Taiwan embraces the Constitution of The Republic of China. In 1947, draft of constitution was officially approved on this day. It was after the second Sino-Japanese war, when Taiwan became a democartic nation. They overthrew the Qing dynasty and established the first Chinese republic. Interestingly, Taiwan is not part of China. After a civil war with Chinese Communist Party, Taiwan is no longer a part of China.
1963- Disney releases ‘The Sword in the Stone’
Movie is based on T. H. White’s “The Sword in the Stone”. Movie was also re-released in 1972 and 1983. Despite getting mixed reviews, it’s box office success. In 2008, American Film Institute included this film under “Top ten Animated Films”. The movie is based on young boy Arthur and his journey to become a King. While getting help from Merlin, this boy turns into a great hero. Many believe the sword is ‘Excalibur’ from Arthurian legend.

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1962- Movie ‘To Kill A Mockingbird’
The movie is based on Harper Lee’s book of the same name. Robert Mulligan and Horton Foote directed the movie. This film has positive reviews from critics. Also, it made six times more in the box office than its actual budget. American Film Institute claims Atticus Finch, the greatest hero of the twentieth century. Unlike many films, this movie is a very good adaptation of a Novel and worth a watch. So, if you are not a bookworm, you can watch this.
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