Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 8 13.  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)
 08/15/2017   14:41:58   ( -70.17, 136.08) 08/15/2017   14:40:56  ( -70.18, 136.00)    3.49                62
 08/15/2017   15:31:26   (  70.01, -56.50) 08/15/2017   15:31:39  (  70.02, -56.45)    2.72                13
 08/15/2017   16:21:03   ( -69.51, 110.45) 08/15/2017   16:22:13  ( -69.50, 111.65)   46.62                70
 08/18/2017   06:58:28   ( -70.10,-108.13) 08/18/2017   06:57:51  ( -70.10,-108.12)    0.43                37
 08/18/2017   07:47:55   (  69.99,  59.36) 08/18/2017   07:48:35  (  70.00,  59.35)    0.77                40
 08/20/2017   22:25:23   (  70.47,-159.35) 08/20/2017   22:24:12  (  70.51,-160.30)   35.54                71
 08/20/2017   23:14:58   ( -70.09,   7.73) 08/20/2017   23:14:48  ( -70.08,   7.68)    2.34                10
 08/21/2017   00:04:25   (  69.98, 175.22) 08/21/2017   00:05:32  (  69.98, 175.14)    3.01                67
 08/23/2017   14:41:59   (  70.12, -43.98) 08/23/2017   14:41:02  (  70.12, -43.93)    1.67                57
 08/23/2017   15:31:29   ( -70.02, 123.51) 08/23/2017   15:31:44  ( -70.01, 123.55)    1.81                15
 08/23/2017   16:21:08   (  69.24, -69.90) 08/23/2017   16:22:15  (  69.22, -67.98)   75.59                67
 08/26/2017   06:58:29   (  70.10,  71.87) 08/26/2017   06:57:59  (  70.11,  71.85)    1.13                30
 08/26/2017   07:47:59   ( -70.00,-120.63) 08/26/2017   07:48:41  ( -70.00,-120.66)    1.30                42