Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 9 18.  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)
 09/19/2019   22:25:39   ( -70.47,  20.64) 09/19/2019   22:24:28  ( -70.56,  19.56)   41.16                71
 09/19/2019   23:15:12   (  70.03,-172.35) 09/19/2019   23:15:04  (  70.03,-172.30)    1.78                 8
 09/20/2019   00:04:42   ( -69.93,  -4.86) 09/20/2019   00:05:46  ( -69.93,  -4.84)    0.98                64
 09/22/2019   14:42:14   ( -70.14, 136.04) 09/22/2019   14:41:14  ( -70.13, 136.00)    1.85                60
 09/22/2019   15:31:41   (  70.03, -56.47) 09/22/2019   15:31:58  (  70.03, -56.53)    2.19                17
 09/22/2019   16:21:21   ( -69.38, 110.27) 09/22/2019   16:22:30  ( -69.40, 111.72)   56.79                69
 09/25/2019   06:58:45   ( -70.09,-108.16) 09/25/2019   06:58:08  ( -70.08,-108.14)    1.15                37
 09/25/2019   07:48:12   (  69.98,  59.33) 09/25/2019   07:48:52  (  69.98,  59.33)    0.19                40
 09/27/2019   22:25:39   (  70.51,-159.30) 09/27/2019   22:24:28  (  70.55,-160.42)   42.07                71
 09/27/2019   23:15:15   ( -70.08,   7.71) 09/27/2019   23:15:03  ( -70.08,   7.63)    3.00                12
 09/28/2019   00:04:43   (  69.91, 175.12) 09/28/2019   00:05:46  (  69.93, 175.18)    2.64                63
 09/30/2019   14:42:16   (  70.12, -43.99) 09/30/2019   14:41:15  (  70.14, -43.99)    1.81                61
 09/30/2019   15:31:46   ( -70.02, 123.50) 09/30/2019   15:31:57  ( -70.03, 123.49)    1.18                11
 09/30/2019   16:21:22   (  69.41, -69.69) 09/30/2019   16:22:31  (  69.40, -68.27)   55.51                69