events
April 1, 1997
Comet Hale–Bopp is seen passing at perihelion.
Comet Hale–Bopp
Comet Hale–Bopp is a long-period comet that was one of the most widely observed of the 20th century and one of the brightest seen for many decades.
Apsis
An apsis is the farthest or nearest point in the orbit of a planetary body about its primary body. The line of apsides is the line connecting the two extreme values.
April 1
April 1 is the 91st day of the year in the Gregorian calendar; 274 days remain until the end of the year.