Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 8 8.  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)
 08/10/2021   14:42:04   ( -70.07, 135.95) 08/10/2021   14:41:19  ( -70.07, 135.99)    1.54                45
 08/10/2021   15:31:31   (  69.96, -56.55) 08/10/2021   15:32:03  (  69.94, -56.51)    2.79                32
 08/13/2021   06:08:53   (  70.73,  85.16) 08/13/2021   06:07:44  (  70.75,  83.37)   65.62                69
 08/13/2021   06:58:34   ( -70.02,-108.24) 08/13/2021   06:58:14  ( -70.03,-108.18)    2.87                20
 08/13/2021   07:48:01   (  69.91,  59.25) 08/13/2021   07:48:58  (  69.91,  59.32)    2.78                57
 08/15/2021   22:25:34   (  70.12,-159.86) 08/15/2021   22:24:29  (  70.13,-159.88)    1.72                65
 08/15/2021   23:15:04   ( -70.02,   7.63) 08/15/2021   23:15:10  ( -69.99,   7.65)    2.98                 6
 08/16/2021   00:04:38   (  69.52, 174.59) 08/16/2021   00:05:48  (  69.55, 175.61)   39.97                70
 08/18/2021   14:42:04   (  70.11, -43.99) 08/18/2021   14:41:25  (  70.10, -44.06)    2.93                39
 08/18/2021   15:31:35   ( -69.95, 123.43) 08/18/2021   15:32:06  ( -69.95, 123.48)    1.93                31
 08/21/2021   06:08:58   ( -70.70, -94.88) 08/21/2021   06:07:49  ( -70.80, -96.73)   68.80                69
 08/21/2021   06:58:35   (  70.04,  71.79) 08/21/2021   06:58:21  (  70.06,  71.76)    3.22                14
 08/21/2021   07:48:05   ( -69.94,-120.71) 08/21/2021   07:49:02  ( -69.92,-120.70)    2.89                57