Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 229
82 AN INTRODUCTION TO ASTRONOMY [ch. vi, 113 earth eastward, he would give two days the same date andday of the week. The change is usually made at the 180thmeridian from Greenwich. This is a particularly fortunateselection, for the 180th meridian scarcely passes through anyland surface at all, and… … IPS 120° 135 150 165 180 165 150 135 120° IPS 80 78Fig. 66. — The change-of-date line. of it people would have a certain day and date, for example,Monday, December 24, and on the other side of it a daylater, Tuesday, December 25. The place of actual change of date does not strictly followthe 180th…
Astronomy
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