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Antipodes of the given Place are under thesame Point of the Meridian, that its An-tœci stood before: Or, if you reckon 180Degrees upon the Meridian, from the givenPlace, that Point will be the Antipodes.

Let the given Place be London , in the La-titude of zii Degrees North; that Placewhich lies under the lame Meridian, and inthe Latitude of 51! Degrees South, is theAntœci: that which lies in the fame Paral-lel with London, and 180 Degrees of Lon-gitude from it, is the Periceci ; and the An-tipodes is that Place whose Longitude fromLondon is 100 Degrees, and Latitude 51IDegrees South.

Prob. X. The Hour of the Day at onePlace being given, to fnd the corre-spondent Hour (or what o’Clock it is atthat Time) in any other Place.

The Difference of Time betwixt twoPlaces is the lame with their Difference ofLongitude; wherefore having found theirDifference of Longitude, reduce it intoTime,(by allowing one Hour for every 15 Degrees,&c.) and if the Place where the Hour is

required lies | } ^ rom t ^ ie ^ ace

where the Hour is given, |^ ract j die

Difference or Longitude reduced into Time

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