Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 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)
 09/21/2020   22:25:31   ( -70.79,  21.12) 09/21/2020   22:24:22  ( -70.84,  19.12)   73.39                69
 09/21/2020   23:15:10   (  70.03,-172.35) 09/21/2020   23:14:53  (  70.05,-172.32)    2.49                17
 09/22/2020   00:04:40   ( -69.93,  -4.87) 09/22/2020   00:05:35  ( -69.95,  -4.85)    3.03                55
 09/24/2020   14:42:13   ( -70.13, 136.02) 09/24/2020   14:41:04  ( -70.11, 136.06)    3.11                69
 09/24/2020   15:31:40   (  70.02, -56.49) 09/24/2020   15:31:48  (  70.00, -56.47)    2.40                 8
 09/24/2020   16:21:14   ( -69.70, 110.70) 09/24/2020   16:22:26  ( -69.69, 111.31)   23.79                72
 09/27/2020   06:58:43   ( -70.13,-108.11) 09/27/2020   06:58:00  ( -70.11,-108.18)    2.95                43
 09/27/2020   07:48:11   (  69.96,  59.30) 09/27/2020   07:48:43  (  69.96,  59.37)    2.68                32
 09/29/2020   22:25:32   (  70.76,-158.92) 09/29/2020   22:24:24  (  70.80,-160.82)   69.78                68
 09/29/2020   23:15:13   ( -70.06,   7.68) 09/29/2020   23:14:54  ( -70.07,   7.66)    0.96                19
 09/30/2020   00:04:40   (  69.94, 175.16) 09/30/2020   00:05:38  (  69.97, 175.13)    2.77                58
 10/02/2020   14:42:13   (  70.14, -43.96) 10/02/2020   14:41:07  (  70.13, -43.98)    1.53                66
 10/02/2020   15:31:43   ( -70.05, 123.54) 10/02/2020   15:31:49  ( -70.02, 123.50)    2.77                 6
 10/02/2020   16:21:16   (  69.60, -69.44) 10/02/2020   16:22:27  (  69.61, -68.57)   33.88                71