Important General Knowledge Facts - December 23, 2025

1. Elon Musk Becomes the First Person to Reach a Net Worth of $700 Billion

Elon Musk, CEO of Tesla and SpaceX, became the world's first person to reach a net worth of over $700 billion. According to Forbes, his total net worth is $749 billion. Interestingly, the combined net worth of Ambani and Adani stands at $180 billion, which is less than a quarter of Musk's fortune.

2. India-New Zealand Free Trade Agreement

India and New Zealand have signed a Free Trade Agreement (FTA) with the aim of doubling trade between the two countries in the next five years. Under this agreement, 95% of New Zealand's exports will see reduced or eliminated tariffs in India, with over 50% of these products becoming duty-free from day one.

3. Japan to Restart the World's Largest Nuclear Power Plant After 15 Years

Japan is set to restart the world's largest nuclear power plant, the Kashiwazaki-Kariwa Nuclear Power Station, located in the Niigata region. The plant had been shut down following the 2011 earthquake and tsunami.

4. Smriti Mandhana Becomes the First Asian to Score 4,000 Runs in Women's T20

Indian cricketer Smriti Mandhana became the first Asian to score 4,000 runs in Women's T20 cricket. She reached 4,007 runs in 154 matches, making her the second woman to achieve this feat, with New Zealand's Suzie Bates being the first.

5. Winter Solstice: The Shortest Day and Longest Night in the Northern Hemisphere

The Winter Solstice marks the shortest day and longest night of the year in the Northern Hemisphere. It occurs every year on December 21. After this date, the days gradually become longer. This phenomenon occurs because the Earth is tilted at an angle of about 23.5 degrees on its axis. During December, the Northern Hemisphere is tilted away from the Sun, resulting in shorter daylight hours, typically around 8-9 hours. Meanwhile, the Southern Hemisphere experiences the longest day of the year, with the Sun shining directly on the Tropic of Capricorn.