Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 3 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)
 03/27/2018   14:41:24   ( -70.14, 135.96) 03/27/2018   14:40:35  ( -70.16, 136.03)    2.89                49
 03/27/2018   15:30:51   (  70.04, -56.54) 03/27/2018   15:31:19  (  70.04, -56.48)    2.08                28
 03/30/2018   06:08:10   (  70.91,  85.34) 03/30/2018   06:07:02  (  70.92,  83.25)   76.03                68
 03/30/2018   06:57:52   ( -70.14,-108.17) 03/30/2018   06:57:31  ( -70.14,-108.18)    1.07                21
 03/30/2018   07:47:19   (  70.03,  59.33) 03/30/2018   07:48:15  (  70.03,  59.30)    1.22                56
 04/01/2018   22:24:51   (  70.18,-159.86) 04/01/2018   22:23:44  (  70.18,-159.79)    2.64                67
 04/01/2018   23:14:21   ( -70.07,   7.62) 04/01/2018   23:14:26  ( -70.08,   7.68)    2.63                 5
 04/02/2018   00:03:54   (  69.63, 174.65) 04/02/2018   00:05:04  (  69.66, 175.63)   37.71                70
 04/04/2018   14:41:18   (  70.16, -44.01) 04/04/2018   14:40:39  (  70.18, -44.02)    2.12                39
 04/04/2018   15:30:48   ( -70.05, 123.47) 04/04/2018   15:31:21  ( -70.08, 123.45)    2.48                33
 04/07/2018   06:08:10   ( -70.74, -94.92) 04/07/2018   06:07:01  ( -70.80, -96.56)   60.32                69
 04/07/2018   06:57:46   (  70.14,  71.84) 04/07/2018   06:57:34  (  70.13,  71.83)    1.20                12
 04/07/2018   07:47:16   ( -70.03,-120.68) 04/07/2018   07:48:16  ( -70.02,-120.69)    1.70                60