sec     hms           resec   diff
0       0s            0       0
1       1s            1       0
59      59s           59      0
60      1m00s         60      0
61      1m01s         61      0
3599    59m59s        3599    0
3600    1h00m00s      3600    0
3601    1h00m01s      3601    0
86399   23h59m59s     86399   0
86400   1d00h00m00s   86400   0
86401   1d00h00m01s   86401   0
863999  9d23h59m59s   863999  0
864000  10d00h00m00s  864000  0
864001  10d00h00m01s  864001  0
-1      -1s           -1      0
-59     -59s          -59     0
-60     -1m00s        -60     0
-61     -1m01s        -61     0
-3599   -59m59s       -3599   0
-3600   -1h00m00s     -3600   0
-3601   -1h00m01s     -3601   0
-86399  -23h59m59s    -86399  0
-86400  -1d00h00m00s  -86400  0
-86401  -1d00h00m01s  -86401  0
-863999 -9d23h59m59s  -863999 0
-864000 -10d00h00m00s -864000 0
-864001 -10d00h00m01s -864001 0
