Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 6 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)
 06/15/2018   13:51:17   (  70.34, -31.27) 06/15/2018   13:50:05  (  70.40, -31.68)   16.90                72
 06/15/2018   14:40:49   ( -70.12, 136.05) 06/15/2018   14:40:43  ( -70.12, 136.09)    1.63                 6
 06/15/2018   15:30:16   (  70.01, -56.46) 06/15/2018   15:31:28  (  70.04, -56.48)    3.12                72
 06/18/2018   06:07:50   (  70.22,  84.44) 06/18/2018   06:06:56  (  70.20,  84.42)    2.42                54
 06/18/2018   06:57:20   ( -70.11,-108.08) 06/18/2018   06:57:38  ( -70.12,-108.14)    2.46                18
 06/18/2018   07:47:01   (  69.23,  58.36) 06/18/2018   07:48:08  (  69.25,  60.45)   82.30                67
 06/20/2018   22:24:22   (  70.15,-159.78) 06/20/2018   22:23:50  (  70.15,-159.74)    1.48                32
 06/20/2018   23:13:52   ( -70.05,   7.71) 06/20/2018   23:14:32  ( -70.07,   7.71)    2.38                40
 06/23/2018   13:51:18   ( -70.63, 149.16) 06/23/2018   13:50:07  ( -70.65, 147.94)   45.08                71
 06/23/2018   14:40:52   (  70.14, -43.92) 06/23/2018   14:40:43  (  70.11, -43.90)    3.14                 9
 06/23/2018   15:30:22   ( -70.04, 123.57) 06/23/2018   15:31:25  ( -70.03, 123.55)    1.61                63
 06/26/2018   06:07:57   ( -70.18, -95.62) 06/26/2018   06:06:53  ( -70.19, -95.55)    2.99                64
 06/26/2018   06:57:23   (  70.12,  71.93) 06/26/2018   06:57:38  (  70.12,  71.86)    2.81                15
 06/26/2018   07:47:01   ( -69.58,-121.18) 06/26/2018   07:48:11  ( -69.56,-119.98)   46.58                70