Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 7 28.  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)
 07/30/2017   14:41:51   ( -70.19, 136.12) 07/30/2017   14:40:41  ( -70.17, 136.07)    3.10                70
 07/30/2017   15:31:19   (  70.03, -56.46) 07/30/2017   15:31:25  (  70.06, -56.46)    3.02                 6
 07/30/2017   16:20:52   ( -69.76, 110.79) 07/30/2017   16:22:04  ( -69.80, 111.25)   18.26                72
 08/02/2017   06:58:22   ( -70.15,-108.06) 08/02/2017   06:57:38  ( -70.13,-108.12)    2.83                44
 08/02/2017   07:47:50   (  69.99,  59.36) 08/02/2017   07:48:21  (  69.97,  59.43)    3.36                31
 08/04/2017   22:25:13   (  70.75,-158.92) 08/04/2017   22:24:04  (  70.78,-160.71)   65.72                69
 08/04/2017   23:14:53   ( -70.10,   7.76) 08/04/2017   23:14:35  ( -70.10,   7.70)    2.29                18
 08/05/2017   00:04:21   (  69.94, 175.17) 08/05/2017   00:05:18  (  69.94, 175.24)    2.99                57
 08/07/2017   14:41:54   (  70.15, -43.93) 08/07/2017   14:40:50  (  70.18, -43.98)    3.24                64
 08/07/2017   15:31:24   ( -70.05, 123.57) 08/07/2017   15:31:32  ( -70.07, 123.51)    2.56                 8
 08/07/2017   16:20:58   (  69.55, -69.48) 08/07/2017   16:22:08  (  69.54, -68.40)   41.93                70
 08/10/2017   06:58:24   (  70.10,  71.88) 08/10/2017   06:57:45  (  70.10,  71.91)    1.14                39
 08/10/2017   07:47:54   ( -70.00,-120.63) 08/10/2017   07:48:27  ( -69.99,-120.61)    2.08                33