Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 7 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)
 07/17/2018   14:41:06   ( -70.14, 136.08) 07/17/2018   14:40:37  ( -70.14, 136.12)    1.49                29
 07/17/2018   15:30:33   (  70.04, -56.42) 07/17/2018   15:31:21  (  70.01, -56.39)    3.29                48
 07/20/2018   06:08:05   (  70.32,  84.58) 07/20/2018   06:06:52  (  70.36,  84.24)   13.65                73
 07/20/2018   06:57:37   ( -70.10,-108.10) 07/20/2018   06:57:31  ( -70.11,-108.06)    2.02                 6
 07/20/2018   07:47:04   (  69.99,  59.40) 07/20/2018   07:48:15  (  69.99,  59.42)    1.07                71
 07/22/2018   22:24:37   (  70.21,-159.69) 07/22/2018   22:23:43  (  70.18,-159.71)    3.42                54
 07/22/2018   23:14:07   ( -70.10,   7.79) 07/22/2018   23:14:25  ( -70.09,   7.75)    2.25                18
 07/23/2018   00:03:48   (  69.22, 174.23) 07/23/2018   00:04:55  (  69.23, 176.32)   82.39                67
 07/25/2018   14:41:07   (  70.15, -43.89) 07/25/2018   14:40:36  (  70.16, -43.91)    1.13                31
 07/25/2018   15:30:37   ( -70.05, 123.59) 07/25/2018   15:31:18  ( -70.07, 123.56)    2.22                41
 07/28/2018   06:08:04   ( -70.59, -95.02) 07/28/2018   06:06:53  ( -70.62, -96.16)   42.11                71
 07/28/2018   06:57:38   (  70.09,  71.90) 07/28/2018   06:57:29  (  70.09,  71.98)    2.83                 9
 07/28/2018   07:47:08   ( -69.99,-120.61) 07/28/2018   07:48:11  ( -69.99,-120.55)    2.12                63