Latitude / Longitude DMS, DDM, DD Regular Expressions

latitude_longitude.txt

Degrees Minutes Seconds (DMS)
  40° 26′ 46″ N 79° 58′ 56″ W
  40° 26′ 46″ S 79° 58′ 56″ E
  90° 0′ 0″ S 180° 0′ 0″ E
  40° 26′ 45.9996″ N   79° 58′ 55.2″ E
  Latitudes range from 0 to 90.
  Longitudes range from 0 to 180.
  Minutes & Seconds range from 0-60
  Use N, S, E or W as either the last character,
    which represents a compass direction North, South, East or West.
  D & M must be intergers, S may be an interger or float.
  DMS.latitude  - /^[\+-]?(([1-8]?\d)\D+([1-5]?\d|60)\D+([1-5]?\d|60)(\.\d+)?|90\D+0\D+0)\D+[NSns]?$/
  DMS.longitude - /^[\+-]?([1-7]?\d{1,2}\D+([1-5]?\d|60)\D+([1-5]?\d|60)(\.\d+)?|180\D+0\D+0)\D+[EWew]?$/

Degrees Decimal Minutes (DDM)
  40° 26.767′ N    79° 58.933′ W
  90°  0′     N   180°  0′     W
  90°         N   180°         W
  Latitudes range from 0 to 90.
  Longitudes range from 0 to 180.
  Use N, S, E or W as either the last character,
    which represents a compass direction North, South, East or West.
  The last degree, minute, or second of a latitude or longitude
    may contain a decimal portion.
  DDM.latitude  - /^[\+-]?(([1-8]?\d)\D+[1-6]?\d(\.\d{1,})?|90(\D+0)?)\D+[NSns]?$/
  DDM.longitude - /^[\+-]?((1[0-7]\d|[1-9]?\d)\D+[1-6]?\d(\.\d{1,})?|180(\D+0)?)\D+[EWew]?$/

Decimal Degrees (DD)
  40.446° N         79.982° W
  Precede South latitudes and West longitudes with a minus sign.
  Latitudes range from -90 to 90
  Longitudes range from -180 to 180
  Up to 6 decimal places
  DD.latitude  - /^[\+-]?(([1-8]?\d)(\.\d{1,})?|90)\D*[NSns]?$/
  DD.longitude - /^[\+-]?((1[0-7]\d|[1-9]?\d)(\.\d{1,})?|180)\D*[EWew]?$/

IN JS:

    const patterns = {
      lat: {
        isDMS: /^(([1-8]?[0-9])\D+([1-5]?[0-9]|60)\D+([1-5]?[0-9]|60)(\.[0-9]+)?|90\D+0\D+0)\D+[NSns]$/,
        isDDM: /^(([1-8]?[0-9])\D+[1-6]?[0-9](\.\d{1,3})?|90(\D+0)?)\D+([NSns])$/,
        isDD:  /^[\+-]?(([1-8]?[0-9])(\.\d{1,6})?|90)\D*[NSns]?$/
      },
      lng: {
        isDMS: /^((1[0-7][0-9]|[1-9]?[0-9])\D+([1-5]?[0-9]|60)\D+([1-5]?[0-9]|60)(\.[0-9]+)?|180\D+0\D+0)\D+[EWew]$/,
        isDDM: /^((1[0-7][0-9]|[1-9]?[0-9])\D+[1-6]?[0-9](\.\d{1,3})?|180(\D+0)?)\D+([EWew])$/,
        isDD:  /^[\+-]?((1[0-7][0-9]|[1-9]?[0-9])(\.\d{1,6})?|180)\D*[EWew]?$/
      }
    };

Combined:

patterns.lat.combined = new RegExp(`^(${patterns.lat.map(tt => `(${tt.toString().replace(/^\/\^(.+?)\$\//g,'$1')})`).join('|')})$`);
patterns.lng.combined = new RegExp(`^(${patterns.lng.map(tt => `(${tt.toString().replace(/^\/\^(.+?)\$\//g,'$1')})`).join('|')})$`)

Updated 8 July 2021 - Removed lodash stuff, converted to ES6 style map.