Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 9 22.  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  ( -70.13, 136.01)    1.64                60
 09/22/2019   15:31:41   (  70.04, -56.47) 09/22/2019   15:31:58  (  70.02, -56.51)    2.39                17
 09/22/2019   16:21:21   ( -69.38, 110.26) 09/22/2019   16:22:30  ( -69.40, 111.72)   57.20                69
 09/25/2019   06:58:45   ( -70.08,-108.17) 09/25/2019   06:58:08  ( -70.08,-108.14)    1.34                37
 09/25/2019   07:48:12   (  69.97,  59.32) 09/25/2019   07:48:52  (  69.97,  59.34)    0.72                40
 09/27/2019   22:25:39   (  70.51,-159.31) 09/27/2019   22:24:28  (  70.55,-160.42)   41.48                71
 09/27/2019   23:15:15   ( -70.08,   7.70) 09/27/2019   23:15:03  ( -70.08,   7.63)    2.51                12
 09/28/2019   00:04:43   (  69.91, 175.11) 09/28/2019   00:05:46  (  69.92, 175.18)    3.25                63
 09/30/2019   14:42:15   (  70.11, -44.01) 09/30/2019   14:41:14  (  70.14, -43.99)    2.93                61
 09/30/2019   15:31:45   ( -70.01, 123.48) 09/30/2019   15:31:56  ( -70.03, 123.48)    2.90                11
 09/30/2019   16:21:21   (  69.40, -69.71) 09/30/2019   16:22:30  (  69.40, -68.27)   56.20                69
 10/03/2019   06:58:45   (  70.09,  71.85) 10/03/2019   06:58:08  (  70.09,  71.85)    0.04                37
 10/03/2019   07:48:15   ( -69.99,-120.66) 10/03/2019   07:48:50  ( -69.99,-120.68)    0.64                35
 10/05/2019   22:25:39   ( -70.68,  20.94) 10/05/2019   22:24:29  ( -70.73,  19.31)   60.39                70
 10/05/2019   23:15:15   (  70.07,-172.30) 10/05/2019   23:15:02  (  70.05,-172.31)    2.20                13
 10/06/2019   00:04:45   ( -69.97,  -4.81) 10/06/2019   00:05:44  ( -69.95,  -4.84)    2.91                59