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,  21.42) 07/27/2017   22:24:00  ( -71.00,  18.95)   89.61                67
 07/27/2017   23:14:48   (  70.11,-172.23) 07/27/2017   23:14:29  (  70.11,-172.30)    2.79                19
 07/28/2017   00:04:19   ( -69.94,  -4.83) 07/28/2017   00:05:10  ( -69.96,  -4.75)    3.24                51
 07/30/2017   14:41:52   ( -70.18, 136.10) 07/30/2017   14:40:42  ( -70.18, 136.04)    2.35                70
 07/30/2017   15:31:19   (  70.07, -56.40) 07/30/2017   15:31:26  (  70.07, -56.48)    3.06                 7
 07/30/2017   16:20:52   ( -69.80, 110.85) 07/30/2017   16:22:04  ( -69.76, 111.30)   17.95                72
 08/02/2017   06:58:22   ( -70.14,-108.08) 08/02/2017   06:57:38  ( -70.14,-108.14)    2.50                44
 08/02/2017   07:47:50   (  69.97,  59.34) 08/02/2017   07:48:21  (  69.99,  59.41)    3.43                31
 08/04/2017   22:25:13   (  70.74,-158.94) 08/04/2017   22:24:04  (  70.80,-160.73)   66.09                69
 08/04/2017   23:14:53   ( -70.09,   7.74) 08/04/2017   23:14:35  ( -70.11,   7.68)    2.91                18
 08/05/2017   00:04:20   (  69.98, 175.23) 08/05/2017   00:05:18  (  69.96, 175.22)    2.56                58
 08/07/2017   14:41:54   (  70.14, -43.94) 08/07/2017   14:40:49  (  70.14, -43.92)    1.29                65
 08/07/2017   15:31:24   ( -70.05, 123.55) 08/07/2017   15:31:31  ( -70.02, 123.57)    2.78                 7
 08/07/2017   16:20:58   (  69.54, -69.50) 08/07/2017   16:22:08  (  69.56, -68.42)   41.81                70