anchor.diff:  
   all() -> 
       [univ_to_local, local_to_univ, local_to_univ_utc,
  -     bad_univ_to_local, bad_local_to_univ, consistency,
  +     bad_univ_to_local, bad_local_to_univ, 
  +     univ_to_seconds, seconds_to_univ,
  +     consistency,
        {group, now}, timestamp].
   
   groups() -> 
  
positive.code: 	  end;
  bad_test_local_to_univ([]) ->
      ok.
  
  %% Test that the the different time functions return
  %% consistent results. (See the test case for assumptions
  
negative.code:      {1998, 06, 3},
       {1999, 06, 4}].
  
  %% exakt utc {date(), time()} which corresponds to the same seconds since 1 jan 1970 
  %% negative seconds are ok
  %% generated with date --date='1979-05-28 12:30:35 UTC' +%s
  ok_utc_seconds() -> [
  	{ {{1970, 1, 1},{ 0, 0, 0}},            0 },
  	{ {{1970, 1, 1},{ 0, 0, 1}},            1 },
  	{ {{1969,12,31},{23,59,59}},           -1 },
  	{ {{1920,12,31},{23,59,59}},  -1546300801 },
  	{ {{1600,02,19},{15,14,08}}, -11671807552 },
  	{ {{1979,05,28},{12,30,35}},    296742635 },
  	{ {{1999,12,31},{23,59,59}},    946684799 },
  	{ {{2000, 1, 1},{ 0, 0, 0}},    946684800 },
  	{ {{2000, 1, 1},{ 0, 0, 1}},    946684801 },
  
  	{ {{2038, 1,19},{03,14,07}},   2147483647 }, % Sint32 full - 1
  	{ {{2038, 1,19},{03,14,08}},   2147483648 }, % Sint32 full
  	{ {{2038, 1,19},{03,14,09}},   2147483649 }, % Sint32 full + 1
  
  	{ {{2106, 2, 7},{ 6,28,14}},   4294967294 }, % Uint32 full  0xFFFFFFFF - 1
  	{ {{2106, 2, 7},{ 6,28,15}},   4294967295 }, % Uint32 full  0xFFFFFFFF
  	{ {{2106, 2, 7},{ 6,28,16}},   4294967296 }, % Uint32 full  0xFFFFFFFF + 1
  	{ {{2012,12, 6},{16,28,08}},   1354811288 },
  	{ {{2412,12, 6},{16,28,08}},  13977592088 }
      ].
  
  
  %% The following dates should not be near the end or beginning of
  %% a month, because they will be used to test when the dates are
  %% different in UTC and local time.
  