Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 11.  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)
 10/13/2021   14:42:21   ( -70.10, 135.96) 10/13/2021   14:41:44  ( -70.08, 135.95)    2.44                37
 10/13/2021   15:31:49   (  69.95, -56.61) 10/13/2021   15:32:28  (  69.97, -56.57)    2.81                39
 10/16/2021   06:09:15   (  70.52,  84.82) 10/16/2021   06:08:05  (  70.57,  83.64)   43.86                70
 10/16/2021   06:58:52   ( -70.02,-108.27) 10/16/2021   06:58:39  ( -70.05,-108.23)    3.12                13
 10/16/2021   07:48:19   (  69.92,  59.23) 10/16/2021   07:49:23  (  69.94,  59.25)    2.11                64
 10/18/2021   22:25:51   (  70.10,-159.91) 10/18/2021   22:24:51  (  70.12,-159.88)    2.14                60
 10/18/2021   23:15:21   ( -69.99,   7.56) 10/18/2021   23:15:33  ( -70.02,   7.59)    2.79                12
 10/19/2021   00:04:58   (  69.34, 174.31) 10/19/2021   00:06:06  (  69.33, 175.92)   63.00                68
 10/21/2021   14:42:20   (  70.12, -44.01) 10/21/2021   14:41:46  (  70.10, -44.07)    3.40                34
 10/21/2021   15:31:50   ( -70.01, 123.47) 10/21/2021   15:32:28  ( -69.99, 123.41)    3.36                38
 10/24/2021   06:09:16   ( -70.57, -95.12) 10/24/2021   06:08:05  ( -70.59, -96.39)   46.84                71
 10/24/2021   06:58:50   (  70.07,  71.80) 10/24/2021   06:58:41  (  70.07,  71.74)    2.46                 9
 10/24/2021   07:48:20   ( -69.97,-120.71) 10/24/2021   07:49:23  ( -69.97,-120.78)    2.78                63