Here is a question about this article: The Gregorian calendar is a solar calendar. A regular Gregorian year consists of 365 days, but as in the Julian calendar, in a leap year, a leap day is added to February. In the Julian calendar a leap year occurs every 4 years, but the Gregorian calendar omits 3 leap days every 400 years. In the Julian calendar, this leap day was inserted by doubling 24 February, and the Gregorian reform did not change the date of the leap day. In the modern period, it has become customary to number the days from the beginning of the month, and February 29th is often considered as the leap day. Some churches, notably the Roman Catholic Church, delay February festivals after the 23rd by one day in leap years.
What is the answer to this question: On what day did both the Julian and Gregorian calendars add leap day?
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So... 24 February

Here is a question about this article: Neptune's mass of 1.02431026 kg, is intermediate between Earth and the larger gas giants: it is 17 times that of Earth but just 1/19th that of Jupiter.[d] Its gravity at 1 bar is 11.15 m/s2, 1.14 times the surface gravity of Earth, and surpassed only by Jupiter. Neptune's equatorial radius of 24,764 km is nearly four times that of Earth. Neptune, like Uranus, is an ice giant, a subclass of giant planet, due to their smaller size and higher concentrations of volatiles relative to Jupiter and Saturn. In the search for extrasolar planets, Neptune has been used as a metonym: discovered bodies of similar mass are often referred to as "Neptunes", just as scientists refer to various extrasolar bodies as "Jupiters".
What is the answer to this question: What is Neptune referred to due to it's size and concentration of volatiles?
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So... ice giant

Here is a question about this article: Muammar Gaddafi was born in a tent near Qasr Abu Hadi, a rural area outside the town of Sirte in the deserts of western Libya. His family came from a small, relatively un-influential tribal group called the Qadhadhfa, who were Arabized Berber in heritage. His father, Mohammad Abdul Salam bin Hamed bin Mohammad, was known as Abu Meniar (died 1985), and his mother was named Aisha (died 1978); Abu Meniar earned a meager subsistence as a goat and camel herder. Nomadic Bedouins, they were illiterate and kept no birth records. As such, Gaddafi's date of birth is not known with certainty, and sources have set it in 1942 or in the spring of 1943, although biographers Blundy and Lycett noted that it could have been pre-1940. His parents' only surviving son, he had three older sisters. Gaddafi's upbringing in Bedouin culture influenced his personal tastes for the rest of his life. He repeatedly expressed a preference for the desert over the city and retreated to the desert to meditate.
What is the answer to this question: When was Gaddafi born?
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So...
Gaddafi's date of birth is not known with certainty, and sources have set it in 1942 or in the spring of 1943