L.LatLng.UTM.js
/*
        * UTMCentralMeridian
        *
        * Determines the central meridian for the given UTM zone.
        *
        * Inputs:
        *     zone - An integer value designating the UTM zone, range [1,60].
        *
        * Returns:
        *   The central meridian for the given UTM zone, in radians, or zero
        *   if the UTM zone parameter is outside the range [1,60].
        *   Range of the central meridian is the radian equivalent of [-177,+177].
        *
        */
UTMCentralMeridian
Determines the central meridian for the given UTM zone.

An integer value designating the UTM zone, range [1,60].

The central meridian for the given UTM zone, in radians, or zero
if the UTM zone parameter is outside the range [1,60].
Range of the central meridian is the radian equivalent of [-177,+177].
UTMCentralMeridian Determines the central meridian for the given UTM zone . An integer value designating the UTM zone range [ 1 60 ] . The central meridian for the given UTM zone in radians or zero if the UTM zone parameter is outside the range [ 1 60 ] . Range of the central meridian is the radian equivalent of [ - 177 + 177 ] .
function UTMCentralMeridian(zone) {
            var cmeridian;
            cmeridian = DegToRad(-183.0 + (zone * 6.0));
            return cmeridian;
        }
function UTMCentralMeridian ( zone ) { var cmeridian ; cmeridian = DegToRad ( - 183.0 + ( zone * 6.0 ) ) ; return cmeridian ; }
UTMCentralMeridian
 Determines the central meridian for the given UTM zone.
UTMCentralMeridian Determines the central meridian for the given UTM zone .