Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 7 26.  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)
 07/27/2017   22:25:07   ( -70.97,  21.41) 07/27/2017   22:24:00  ( -71.01,  18.94)   89.64                67
 07/27/2017   23:14:48   (  70.10,-172.23) 07/27/2017   23:14:29  (  70.11,-172.31)    2.95                19
 07/28/2017   00:04:18   ( -69.99,  -4.76) 07/28/2017   00:05:10  ( -69.96,  -4.76)    3.22                52
 07/30/2017   14:41:52   ( -70.17, 136.09) 07/30/2017   14:40:42  ( -70.19, 136.04)    2.84                70
 07/30/2017   15:31:19   (  70.06, -56.41) 07/30/2017   15:31:26  (  70.08, -56.49)    3.34                 7
 07/30/2017   16:20:52   ( -69.79, 110.84) 07/30/2017   16:22:04  ( -69.77, 111.30)   17.77                72
 08/02/2017   06:58:23   ( -70.13,-108.08) 08/02/2017   06:57:39  ( -70.15,-108.14)    3.00                44
 08/02/2017   07:47:50   (  70.02,  59.41) 08/02/2017   07:48:22  (  69.99,  59.40)    3.27                32
 08/04/2017   22:25:13   (  70.74,-158.94) 08/04/2017   22:24:04  (  70.80,-160.74)   66.08                69
 08/04/2017   23:14:53   ( -70.09,   7.73) 08/04/2017   23:14:34  ( -70.06,   7.75)    3.22                19
 08/05/2017   00:04:20   (  69.97, 175.22) 08/05/2017   00:05:18  (  69.96, 175.22)    1.65                58
 08/07/2017   14:41:54   (  70.14, -43.95) 08/07/2017   14:40:49  (  70.14, -43.92)    1.09                65
 08/07/2017   15:31:24   ( -70.04, 123.55) 08/07/2017   15:31:31  ( -70.03, 123.57)    1.93                 7
 08/07/2017   16:20:58   (  69.54, -69.50) 08/07/2017   16:22:08  (  69.56, -68.42)   41.99                70