Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 12 15.  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)
 12/16/2019   23:15:11   ( -70.10,   7.71) 12/16/2019   23:14:29  ( -70.10,   7.66)    2.10                42
 12/17/2019   00:04:38   (  69.99, 175.20) 12/17/2019   00:05:13  (  69.99, 175.15)    2.11                35
 12/19/2019   14:42:00   (  70.73, -43.11) 12/19/2019   14:40:51  (  70.75, -44.90)   65.74                69
 12/19/2019   15:31:41   ( -70.02, 123.49) 12/19/2019   15:31:21  ( -70.03, 123.56)    2.76                20
 12/19/2019   16:21:08   (  69.91, -69.03) 12/19/2019   16:22:05  (  69.91, -68.97)    2.43                57
 12/22/2019   06:58:40   (  70.10,  71.84) 12/22/2019   06:57:32  (  70.10,  71.90)    2.30                68
 12/22/2019   07:48:10   ( -70.00,-120.67) 12/22/2019   07:48:14  ( -70.00,-120.63)    1.46                 4
 12/22/2019   08:37:42   (  69.61,  46.44) 12/22/2019   08:38:53  (  69.63,  47.23)   30.84                71
 12/24/2019   23:15:09   (  70.07,-172.32) 12/24/2019   23:14:25  (  70.08,-172.30)    1.93                44
 12/25/2019   00:04:38   ( -69.97,  -4.82) 12/25/2019   00:05:06  ( -69.98,  -4.83)    1.56                28
 12/27/2019   14:41:56   ( -70.92, 137.18) 12/27/2019   14:40:49  ( -71.01, 134.69)   90.75                67
 12/27/2019   15:31:37   (  70.03, -56.49) 12/27/2019   15:31:16  (  70.02, -56.42)    3.24                21
 12/27/2019   16:21:07   ( -69.94, 111.01) 12/27/2019   16:21:58  ( -69.91, 111.05)    3.22                51