Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 6 19.  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)
 06/20/2020   14:41:36   ( -70.18, 136.12) 06/20/2020   14:40:23  ( -70.17, 136.04)    3.21                73
 06/20/2020   15:31:04   (  70.03, -56.46) 06/20/2020   15:31:07  (  70.05, -56.47)    2.96                 3
 06/20/2020   16:20:35   ( -69.86, 110.94) 06/20/2020   16:21:47  ( -69.86, 111.13)    7.48                72
 06/23/2020   06:58:08   ( -70.11,-108.12) 06/23/2020   06:57:16  ( -70.10,-108.08)    1.51                52
 06/23/2020   07:47:35   (  70.00,  59.38) 06/23/2020   07:48:00  (  69.99,  59.41)    2.00                25
 06/23/2020   08:37:20   ( -69.07,-134.25) 06/23/2020   08:38:26  ( -69.05,-131.92)   92.58                66
 06/25/2020   23:14:39   ( -70.08,   7.72) 06/25/2020   23:14:10  ( -70.09,   7.72)    0.90                29
 06/26/2020   00:04:06   (  69.97, 175.22) 06/26/2020   00:04:54  (  69.97, 175.21)    0.45                48
 06/28/2020   14:41:37   (  70.26, -43.77) 06/28/2020   14:40:24  (  70.32, -44.18)   17.08                73
 06/28/2020   15:31:09   ( -70.05, 123.56) 06/28/2020   15:31:03  ( -70.07, 123.52)    2.98                 6
 06/28/2020   16:20:36   (  69.94, -68.95) 06/28/2020   16:21:47  (  69.96, -69.00)    2.98                71
 07/01/2020   06:58:10   (  70.12,  71.91) 07/01/2020   06:57:14  (  70.10,  71.94)    2.27                56
 07/01/2020   07:47:40   ( -70.02,-120.61) 07/01/2020   07:47:56  ( -70.01,-120.60)    1.13                16
 07/01/2020   08:37:20   (  69.19,  45.91) 07/01/2020   08:38:27  (  69.21,  47.88)   77.62                67