Having brought the place at which the hour is given to the meridian, set the hour index to the given hour; then turn the globe about until the place where the hour is required comes to the meridian, and the index will point out the hour at the said place. Thus when it is _Noon_ at _London_, it is H. M. { _Rome_ 0 52 P. M. At { _Constantinople_ 2 07 P. M. { _Vera-Cruz_ 5 30 A. M. { _Pekin_ in _China_ 7 50 P. M. PROB. XI. _The Day of the Month being given, to find those places on the globe where the Sun will be Vertical, or in the Zenith, that day._ Having found the Sun’s place in the ecliptic, bring the same to the meridian, and note the degree over it; then turning the globe round, all places that pass under that degree will have the Sun vertical that day. PROB. XII. _A place being given in the_ Torrid Zone, _to find those two Days in which the Sun shall be Vertical to the same._ Bring the given place to the meridian, and mark what degree of latitude is exactly over it; then turning the globe about its axis, those two points of the ecliptic, which pass exactly under the said mark, are the Sun’s place; against which, upon the wooden horizon, you’ll have the days required. PROB. XIII. _To find where the Sun is Vertical at any given time assigned; or the Day of the Month and the Hour at any Place_ (_suppose_ London) _being given, to find in what place the Sun is Vertical at that very time._ Having found the Sun’s declination, and brought the first place (_London_) to the meridian, set the index to the given hour, then turn the globe about until the index points to XII at noon; which being done, that place upon the globe which stands under the point of the Sun’s declination upon the meridian, has the Sun that moment in the Zenith. PROB. XIV. _The Day, and the Hour of the Day at one place, being given; to find all those places upon the Earth, where the Sun is then Rising, Setting, Culminating (or on the meridian) also where it is Day-light, Twilight, Dark Night, Midnight; where the Twilight then begins, and where it ends; the height of the Sun in any part of the illuminated hemisphere; also his depression in the obscure hemisphere._ Having found the place where the Sun is vertical at the given hour, rectify the globe for that latitude, and bring the said place to the meridian. Then all those places that are in the Western semicircle of the horizon, have the Sun rising at that time. Those in the Eastern semicircle have it setting. To those who live under the upper semicircle of the meridian, it is 12 o’clock at noon. And, Those who live under the lower semicircle of the meridian, have it at midnight.