Sky events for April 2013
April 1 – Sunrise at 6:39 a.m., sunset at 7:26 p.m.
April 3 – Last-quarter moon overhead at sunrise.
April 10 – New moon always rises/sets near the sun.
April 14 – Moon 4 degrees from Jupiter.
April 18 – First-quarter moon overhead at sunset.
April 21 – Lyrid meteor shower (10-15 per hour).
April 22 – Lyrid meteor shower peaks in pre-dawn.
April 25 – Full moon always rises/sets with sun.
April 28 – Saturn at opposition, rises/sets with sun.
April 30 – Sunrise at 5:50 a.m., sunset at 8:02 p.m.
Witnessing Rare Celestial Events
If you are 13 years old or more, do you realize that you witnessed the third and latest leap year rule in 2000? The third leap year rule is that one should have a leap year if the year is evenly divisible by 400, even though year’s evenly divisible by 100 are skipped (the second rule).
The first time the 400-year rule was used was in 1600. That is when Galileo was the first person to think of using a new optical device (called a telescope) to look at celestial objects. The next time the 400-year rule will be used is the year 2400.
The repeating pattern for Venus transits is eight years, 105.5 years, eight years and 120.5 years. A Venus transit happened in December of 1874 (when the 13th Amendment was only 9 years old) and December of 1882.
Then every person on planet Earth died before the next pair of Venus transits June 8, 2004, and June 5, 2012 (when President Obama was in the last year of his first term). The next pair of transits will be December 2117 and December 2125.