Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 9 20.  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)
 09/22/2019   14:42:14   ( -70.14, 136.04) 09/22/2019   14:41:14  ( -70.14, 136.00)    1.44                60
 09/22/2019   15:31:41   (  70.03, -56.47) 09/22/2019   15:31:58  (  70.03, -56.52)    1.97                17
 09/22/2019   16:21:21   ( -69.38, 110.26) 09/22/2019   16:22:30  ( -69.40, 111.72)   57.02                69
 09/25/2019   06:58:45   ( -70.08,-108.17) 09/25/2019   06:58:08  ( -70.08,-108.14)    1.00                37
 09/25/2019   07:48:12   (  69.97,  59.32) 09/25/2019   07:48:52  (  69.98,  59.33)    0.67                40
 09/27/2019   22:25:39   (  70.51,-159.31) 09/27/2019   22:24:28  (  70.56,-160.43)   41.85                71
 09/27/2019   23:15:15   ( -70.08,   7.70) 09/27/2019   23:15:03  ( -70.08,   7.63)    2.87                12
 09/28/2019   00:04:43   (  69.91, 175.11) 09/28/2019   00:05:46  (  69.93, 175.18)    3.49                63
 09/30/2019   14:42:16   (  70.11, -44.00) 09/30/2019   14:41:15  (  70.14, -44.00)    3.43                61
 09/30/2019   15:31:45   ( -70.01, 123.49) 09/30/2019   15:31:56  ( -70.04, 123.48)    2.99                11
 09/30/2019   16:21:21   (  69.40, -69.71) 09/30/2019   16:22:30  (  69.40, -68.28)   55.90                69
 10/03/2019   06:58:45   (  70.10,  71.85) 10/03/2019   06:58:08  (  70.10,  71.84)    0.41                37
 10/03/2019   07:48:15   ( -70.00,-120.65) 10/03/2019   07:48:50  ( -69.99,-120.68)    1.02                35