Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 12 25.  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)
 12/27/2019   14:41:55   ( -70.93, 137.20) 12/27/2019   14:40:48  ( -70.97, 134.75)   89.03                67
 12/27/2019   15:31:36   (  70.06, -56.45) 12/27/2019   15:31:17  (  70.08, -56.51)    2.72                19
 12/27/2019   16:21:06   ( -69.95, 111.03) 12/27/2019   16:21:58  ( -69.93, 111.03)    2.69                52
 12/30/2019   06:58:38   ( -70.13,-108.11) 12/30/2019   06:57:25  ( -70.12,-108.10)    1.96                73
 12/30/2019   07:48:05   (  70.02,  59.37) 12/30/2019   07:48:09  (  70.01,  59.37)    1.29                 4
 12/30/2019   08:37:37   ( -69.81,-133.29) 12/30/2019   08:38:49  ( -69.81,-133.01)   10.71                72
 01/01/2020   23:15:07   ( -70.09,   7.71) 01/01/2020   23:14:18  ( -70.10,   7.70)    1.00                49
 01/02/2020   00:04:34   (  69.98, 175.19) 01/02/2020   00:05:02  (  70.00, 175.16)    2.51                28
 01/04/2020   14:41:51   (  70.97, -42.74) 01/04/2020   14:40:45  (  71.03, -45.34)   94.43                66
 01/04/2020   15:31:36   ( -70.05, 123.53) 01/04/2020   15:31:10  ( -70.03, 123.57)    2.40                26
 01/04/2020   16:21:03   (  69.93, -68.99) 01/04/2020   16:21:54  (  69.93, -68.96)    1.15                51
 01/07/2020   06:58:33   (  70.15,  71.92) 01/07/2020   06:57:20  (  70.13,  71.89)    2.93                73
 01/07/2020   07:48:04   ( -70.00,-120.66) 01/07/2020   07:48:02  ( -70.02,-120.63)    2.60                 2
 01/07/2020   08:37:32   (  69.82,  46.74) 01/07/2020   08:38:44  (  69.82,  46.98)    9.33                72