Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 1 15.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2015   02:01:34   ( -70.78, -33.04) 01/17/2015   02:00:34  ( -70.80, -33.00)    2.25                60
 01/17/2015   02:51:01   (  70.68, 134.46) 01/17/2015   02:51:18  (  70.67, 134.52)    2.68                17
 01/17/2015   03:40:41   ( -70.02, -58.88) 01/17/2015   03:41:49  ( -70.02, -57.15)   65.56                68
 01/19/2015   18:18:02   ( -70.76,  82.80) 01/19/2015   18:17:23  ( -70.76,  82.84)    1.63                39
 01/19/2015   19:07:29   (  70.65,-109.71) 01/19/2015   19:08:07  (  70.64,-109.65)    2.37                38
 01/22/2015   09:44:50   (  71.36,  32.01) 01/22/2015   09:43:41  (  71.39,  30.25)   62.70                69
 01/22/2015   10:34:29   ( -70.76,-161.31) 01/22/2015   10:34:12  ( -70.74,-161.34)    2.73                17
 01/22/2015   11:23:57   (  70.60,   6.10) 01/22/2015   11:24:56  (  70.62,   6.17)    3.00                59
 01/25/2015   02:01:26   (  70.80, 147.01) 01/25/2015   02:00:18  (  70.79, 147.03)    1.08                68
 01/25/2015   02:50:56   ( -70.69, -45.53) 01/25/2015   02:51:00  ( -70.72, -45.52)    3.17                 4
 01/25/2015   03:40:28   (  70.31, 121.55) 01/25/2015   03:41:38  (  70.28, 122.48)   34.82                70
 01/27/2015   18:17:53   (  70.76, -97.17) 01/27/2015   18:17:07  (  70.78, -97.16)    2.83                46
 01/27/2015   19:07:23   ( -70.65,  70.29) 01/27/2015   19:07:48  ( -70.65,  70.38)    3.00                25