The Definite Seventh Day

Table of Contents

Statement of the Difficulty

Our world is a vast globe which makes a complete revolution upon its axis once every twenty-four hours. In consequence of this, it is night to a portion of its inhabitants while it is day to the other portion. The day is therefore twelve hours earlier on one side of the globe than it is upon the other. And unless we can fix some line, or point, or place, from which to begin the reckoning of the day, we are thrown into confusion as to the definite day. Moreover, those who circumnavigate the globe in one direction gain a day by the operation; while those who sail around it in the opposite direction lose a day. We cannot, indeed, actually gain a day, nor is it possible for us really to lose one. It would therefore be more correct for us to speak of adding a day to our reckoning, or of dropping a day from it, than to speak of a day as actually lost or gained. We drop a day in circumnavigating the globe from east to west. This is done by going with the sun, and thus prolonging the time that it remains above the horizon. By this means we make each of our days a fraction more than twenty-four hours long. And in the complete circuit of our globe, we thus use up one entire period of twenty-four hours. And we add a day to our reckoning by going round the world from west to east. For as we thus travel in a direction opposite to the sun, we make the period of sunlight each day a fraction less to ourselves than it would have been had we remained stationary. And so also of the night, which we shorten in the same manner. As we thus take a fraction from each period between the successive sunsets, we do, in the complete circuit of the globe, thus save one day as the sum total of these fractions, though we have had no more real time than those who remained at home, whose reckoning is one day less than ours. DSD 1.1

Or to state it in another form: If we travel in the same direction with the motion of the earth, we gain one revolution of the sun by going ourselves one time more around the earth’s axis than do those who, during the same time, remain in their own land. And, again, if we travel in the direction opposite to the motion of the earth, i.e., if we go as the sun appears to go, from east to west, we actually make one revolution around the earth’s axis less than do those who remain at home. For as we travel against the motion of the earth, our circuit of the globe offsets one of the revolutions which the earth has made on its axis during this time. As a consequence, those who go round the world eastward are, when they arrive at their starting point, one day in advance of the reckoning of those who live in the country from which they started. And those who go around it in a westerly direction come out one day behind the reckoning of their own country. DSD 2.1

The number of those who actually accomplish the circuit of the globe is, comparatively speaking, very small. But these are not the only ones whose case presents a problem for solution. The people of Eastern Asia are one day in advance of the people of California. Also, the people of Alaska, recently transferred from the government of Russia to that of the United States, have a reckoning of time which is one day in advance of ours. And such was the case with the inhabitants of Pitcairn’s Island in the South Pacific, lying in the longitude of the west side of British America. These people brought their reckoning eastward from the coast of Asia, and thus, when visited by sailors who came westward from England, their time was one day in advance of the reckoning of those sailors. And, finally, the island of Australia, which lies south of the continent of Asia, gives occasion for a consideration of this question of the proper reckoning of the week. For if it conform in its reckoning of the week to that of the people of Eastern Asia, who are directly to the north of it, its time will be one day in advance of those who go to it across the Pacific Ocean from the west coast of America. DSD 3.1