Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 2 16.  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)
 02/18/2021   06:58:28   ( -70.15,-108.12) 02/18/2021   06:57:22  ( -70.13,-108.18)    3.14                66
 02/18/2021   07:47:56   (  69.99,  59.30) 02/18/2021   07:48:06  (  70.01,  59.30)    2.22                10
 02/18/2021   08:37:30   ( -69.60,-133.60) 02/18/2021   08:38:41  ( -69.60,-132.77)   32.33                71
 02/20/2021   23:14:56   ( -70.10,   7.69) 02/20/2021   23:14:15  ( -70.08,   7.67)    3.11                41
 02/21/2021   00:04:24   (  69.95, 175.11) 02/21/2021   00:04:59  (  69.97, 175.15)    2.59                35
 02/23/2021   14:41:47   (  70.60, -43.33) 02/23/2021   14:40:37  (  70.65, -44.78)   53.68                70
 02/23/2021   15:31:25   ( -70.05, 123.50) 02/23/2021   15:31:09  ( -70.03, 123.52)    2.85                16
 02/23/2021   16:20:52   (  69.95, -69.00) 02/23/2021   16:21:53  (  69.92, -69.01)    3.13                61
 02/26/2021   06:58:24   (  70.11,  71.82) 02/26/2021   06:57:22  (  70.13,  71.81)    3.04                62
 02/26/2021   07:47:54   ( -70.00,-120.69) 02/26/2021   07:48:03  ( -69.98,-120.64)    2.65                 9
 02/26/2021   08:37:29   (  69.45,  46.19) 02/26/2021   08:38:39  (  69.45,  47.45)   49.08                70
 02/28/2021   23:14:52   (  70.10,-172.31) 02/28/2021   23:14:16  (  70.09,-172.35)    1.98                36
 03/01/2021   00:04:21   ( -69.99,  -4.82) 03/01/2021   00:04:57  ( -69.99,  -4.89)    2.51                36