Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 9 30.  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)
 09/30/2021   06:09:11   (  70.45,  84.73) 09/30/2021   06:08:00  (  70.52,  83.72)   38.26                71
 09/30/2021   06:58:46   ( -70.06,-108.20) 09/30/2021   06:58:35  ( -70.05,-108.24)    1.70                11
 09/30/2021   07:48:14   (  69.91,  59.23) 09/30/2021   07:49:19  (  69.94,  59.24)    3.19                65
 10/02/2021   22:25:47   (  70.13,-159.86) 10/02/2021   22:24:48  (  70.10,-159.86)    3.47                59
 10/02/2021   23:15:17   ( -70.02,   7.61) 10/02/2021   23:15:30  ( -70.00,   7.61)    1.55                13
 10/03/2021   00:04:55   (  69.31, 174.29) 10/03/2021   00:06:03  (  69.31, 175.93)   64.72                68
 10/05/2021   14:42:18   (  70.08, -44.06) 10/05/2021   14:41:43  (  70.06, -44.02)    2.74                35
 10/05/2021   15:31:48   ( -69.96, 123.41) 10/05/2021   15:32:25  ( -69.95, 123.45)    1.78                37
 10/08/2021   06:09:14   ( -70.56, -95.13) 10/08/2021   06:08:03  ( -70.59, -96.39)   46.96                71
 10/08/2021   06:58:48   (  70.07,  71.81) 10/08/2021   06:58:39  (  70.07,  71.73)    2.77                 9
 10/08/2021   07:48:18   ( -69.96,-120.71) 10/08/2021   07:49:21  ( -69.96,-120.79)    2.94                63
 10/10/2021   22:25:51   ( -70.11,  20.10) 10/10/2021   22:24:49  ( -70.13,  20.10)    2.10                62
 10/10/2021   23:15:18   (  70.00,-172.41) 10/10/2021   23:15:33  (  70.03,-172.44)    3.21                15
 10/11/2021   00:04:56   ( -69.46,  -5.53) 10/11/2021   00:06:06  ( -69.45,  -4.26)   49.59                70
 10/13/2021   14:42:21   ( -70.10, 135.96) 10/13/2021   14:41:44  ( -70.09, 135.93)    0.92                37
 10/13/2021   15:31:48   (  69.99, -56.56) 10/13/2021   15:32:28  (  70.00, -56.61)    2.36                40