Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
		1	2	3	4	5      101 years ago, in 1843: The Great Comet of 1843 is first observed.
6	7	8	9      31 years ago, in 1913: Several hundred meteors are seen streaming across the sky from Saskatchewan to Bermuda.	10      10 years ago, in 1934: 4179 Toutatis is first sighted as object 1934 CT, but is lost soon after.	11      144 years ago, in 1800: While testing filters for observing the Sun, William Herschel discovers infrared radiation in sunlight.	12
13	14	15      380 years ago, in 1564: Galileo Galilei is born in Pisa, Duchy of Florence, Italy.      99 years ago, in 1845: The 72-inch Rosse (Leviathan of Parsonstown) Telescope sees "first light".	16	17	18      14 years ago, in 1930: Clyde W. Tombaugh discovers Pluto.	19      471 years ago, in 1473: Nicolaus Copernicus is born in Thorn, Royal Prussia, Kingdom of Poland.      157 years ago, in 1787: William Herschel's 40-foot (Great Forty-Foot) Telescope sees "first light".
20	21	22	23	24	25	26      328 years ago, in 1616: Galileo Galilei is ordered by the Inquisition to abandon the Copernican theories.      161 years ago, in 1783: NGC 2360 (Caroline's Cluster), an open cluster in the constellation Canis Major, is discovered by Caroline Herschel.
27      101 years ago, in 1843: The Great Comet of 1843 makes a very close perihelion of less than 515,000 miles (830,000 km).      2 years ago, in 1942: James Stanley Hey accidentaly discovers radio emmissions coming from the Sun.	28      388 years ago, in 1556: The German astronomer Joachim Heller discovers the Great Comet of 1556 (C/1556 D1).	29      440 years ago, in 1504: Christopher Columbus correctly predicts a total lunar eclipse and uses it to convince the natives of Jamaica to continue feeding his men.