Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 6 28.  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)
 06/28/2018   22:24:27   ( -70.19,  20.27) 06/28/2018   22:23:47  ( -70.19,  20.23)    1.44                40
 06/28/2018   23:13:55   (  70.03,-172.31) 06/28/2018   23:14:31  (  70.05,-172.26)    2.89                36
 07/01/2018   13:51:19   (  70.77, -30.62) 07/01/2018   13:50:10  (  70.80, -32.29)   61.26                69
 07/01/2018   14:40:58   ( -70.17, 136.12) 07/01/2018   14:40:41  ( -70.15, 136.07)    3.06                17
 07/01/2018   15:30:26   (  70.01, -56.46) 07/01/2018   15:31:25  (  70.02, -56.43)    1.74                59
 07/04/2018   06:08:00   (  70.19,  84.40) 07/04/2018   06:06:53  (  70.19,  84.46)    2.31                67
 07/04/2018   06:57:30   ( -70.09,-108.12) 07/04/2018   06:57:35  ( -70.11,-108.10)    2.48                 5
 07/04/2018   07:47:03   (  69.65,  58.92) 07/04/2018   07:48:13  (  69.67,  59.88)   37.16                70
 07/06/2018   22:24:31   (  70.16,-159.77) 07/06/2018   22:23:47  (  70.16,-159.71)    1.99                44
 07/06/2018   23:14:01   ( -70.06,   7.72) 07/06/2018   23:14:29  ( -70.07,   7.73)    1.83                28
 07/09/2018   13:51:19   ( -71.05, 149.81) 07/09/2018   13:50:12  ( -71.08, 147.26)   92.25                67
 07/09/2018   14:41:01   (  70.12, -43.94) 07/09/2018   14:40:40  (  70.13, -43.89)    1.81                21
 07/09/2018   15:30:31   ( -70.02, 123.55) 07/09/2018   15:31:22  ( -70.04, 123.56)    1.85                51
 07/12/2018   06:08:04   ( -70.25, -95.52) 07/12/2018   06:06:51  ( -70.27, -95.64)    4.67                73
 07/12/2018   06:57:32   (  70.08,  71.88) 07/12/2018   06:57:34  (  70.10,  71.93)    2.49                 2
 07/12/2018   07:47:02   ( -69.99,-120.62) 07/12/2018   07:48:15  ( -69.96,-120.54)    4.66                73