Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 7 19.  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)
 07/19/2020   22:25:06   ( -70.93,  21.35) 07/19/2020   22:23:58  ( -70.97,  18.94)   87.78                68
 07/19/2020   23:14:47   (  70.07,-172.28) 07/19/2020   23:14:27  (  70.06,-172.29)    0.62                20
 07/20/2020   00:04:17   ( -69.95,  -4.81) 07/20/2020   00:05:08  ( -69.93,  -4.77)    2.93                51
 07/22/2020   14:41:49   ( -70.17, 136.09) 07/22/2020   14:40:38  ( -70.15, 136.04)    2.80                71
 07/22/2020   15:31:17   (  70.01, -56.49) 07/22/2020   15:31:22  (  70.02, -56.46)    1.94                 5
 07/22/2020   16:20:49   ( -69.79, 110.84) 07/22/2020   16:22:01  ( -69.78, 111.22)   14.58                72
 07/25/2020   06:58:20   ( -70.11,-108.11) 07/25/2020   06:57:34  ( -70.11,-108.13)    0.83                46
 07/25/2020   07:47:47   (  70.00,  59.38) 07/25/2020   07:48:18  (  69.98,  59.36)    2.01                31
 07/27/2020   22:25:09   (  70.81,-158.82) 07/27/2020   22:24:01  (  70.84,-160.85)   74.10                68
 07/27/2020   23:14:51   ( -70.05,   7.69) 07/27/2020   23:14:30  ( -70.07,   7.70)    2.02                21
 07/28/2020   00:04:18   (  69.94, 175.18) 07/28/2020   00:05:14  (  69.95, 175.19)    1.14                56
 07/30/2020   14:41:51   (  70.14, -43.93) 07/30/2020   14:40:44  (  70.12, -43.93)    2.60                67
 07/30/2020   15:31:21   ( -70.04, 123.56) 07/30/2020   15:31:26  ( -70.03, 123.53)    2.03                 5
 07/30/2020   16:20:54   (  69.60, -69.41) 07/30/2020   16:22:04  (  69.59, -68.52)   34.79                70