What's the difficulty?

Your entry should read:

tranquility.lan. IN LOC 54 34 48 N 1 13 48 W

And that's from reading this:

3. Master File Format

   The LOC record is expressed in a master file in the following format:

   <owner> <TTL> <class> LOC ( d1 [m1 [s1]] {"N"|"S"} d2 [m2 [s2]]
                               {"E"|"W"} alt["m"] [siz["m"] [hp["m"]
                               [vp["m"]]]] )

   (The parentheses are used for multi-line data as specified in [RFC
   1035] section 5.1.)

   where:

       d1:     [0 .. 90]            (degrees latitude)
       d2:     [0 .. 180]           (degrees longitude)
       m1, m2: [0 .. 59]            (minutes latitude/longitude)
       s1, s2: [0 .. 59.999]        (seconds latitude/longitude)
       alt:    [-100000.00 .. 42849672.95] BY .01 (altitude in meters)
       siz, hp, vp: [0 .. 90000000.00] (size/precision in meters)

   If omitted, minutes and seconds default to zero, size defaults to 1m,
   horizontal precision defaults to 10000m, and vertical precision
   defaults to 10m.  These defaults are chosen to represent typical
   ZIP/postal code area sizes, since it is often easy to find
   approximate geographical location by ZIP/postal code.

Hint: no decimals or negatives. :-)

Wade.

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