Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 18.  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)
 12/18/2020   23:15:14   ( -70.09,   7.69) 12/18/2020   23:14:12  ( -70.12,   7.68)    3.21                62
 12/19/2020   00:04:41   (  69.99, 175.19) 12/19/2020   00:04:56  (  70.00, 175.17)    1.22                15
 12/19/2020   00:54:19   ( -69.44, -17.93) 12/19/2020   00:55:29  ( -69.44, -16.69)   48.61                70
 12/21/2020   15:31:43   ( -70.07, 123.55) 12/21/2020   15:31:07  ( -70.07, 123.52)    1.08                36
 12/21/2020   16:21:10   (  69.97, -68.96) 12/21/2020   16:21:51  (  69.95, -68.99)    1.84                41
 12/24/2020   06:58:37   (  70.37,  72.22) 12/24/2020   06:57:25  (  70.43,  71.40)   31.40                72
 12/24/2020   07:48:11   ( -70.05,-120.61) 12/24/2020   07:48:01  ( -70.03,-120.65)    2.78                10
 12/24/2020   08:37:38   (  69.94,  46.88) 12/24/2020   08:38:45  (  69.91,  46.84)    3.27                67
 12/26/2020   23:15:11   (  70.06,-172.34) 12/26/2020   23:14:14  (  70.08,-172.28)    2.89                57
 12/27/2020   00:04:41   ( -69.96,  -4.85) 12/27/2020   00:04:56  ( -69.98,  -4.81)    2.73                15
 12/27/2020   00:54:20   (  69.18, 161.74) 12/27/2020   00:55:27  (  69.18, 163.66)   75.80                67
 12/29/2020   15:31:40   (  70.02, -56.51) 12/29/2020   15:31:09  (  70.04, -56.46)    3.02                31
 12/29/2020   16:21:10   ( -69.92, 110.98) 12/29/2020   16:21:51  ( -69.94, 111.01)    2.40                41