Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 7 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)
 07/30/2018   22:24:43   ( -70.16,  20.23) 07/30/2018   22:23:53  ( -70.17,  20.26)    1.59                50
 07/30/2018   23:14:10   (  70.06,-172.26) 07/30/2018   23:14:37  (  70.06,-172.25)    1.02                27
 07/31/2018   00:03:56   ( -69.07,  -5.98) 07/31/2018   00:05:02  ( -69.07,  -3.49)   98.72                66
 08/02/2018   13:51:30   (  71.03, -30.22) 08/02/2018   13:50:23  (  71.05, -32.70)   89.74                67
 08/02/2018   14:41:14   ( -70.16, 136.10) 08/02/2018   14:40:50  ( -70.16, 136.05)    2.22                24
 08/02/2018   15:30:41   (  70.05, -56.40) 08/02/2018   15:31:34  (  70.05, -56.47)    2.69                53
 08/05/2018   06:08:15   (  70.20,  84.40) 08/05/2018   06:07:03  (  70.20,  84.44)    1.42                72
 08/05/2018   06:57:45   ( -70.09,-108.12) 08/05/2018   06:57:45  ( -70.10,-108.09)    1.64                 0
 08/05/2018   07:47:14   (  69.87,  59.22) 08/05/2018   07:48:26  (  69.83,  59.62)   15.93                72
 08/07/2018   22:24:46   (  70.18,-159.75) 08/07/2018   22:24:00  (  70.20,-159.79)    2.69                46
 08/07/2018   23:14:16   ( -70.07,   7.74) 08/07/2018   23:14:42  ( -70.09,   7.69)    2.85                26
 08/10/2018   13:51:35   ( -71.08, 149.85) 08/10/2018   13:50:29  ( -71.13, 147.15)   97.56                66
 08/10/2018   14:41:17   (  70.15, -43.90) 08/10/2018   14:40:56  (  70.14, -43.94)    2.26                21
 08/10/2018   15:30:47   ( -70.05, 123.59) 08/10/2018   15:31:38  ( -70.03, 123.54)    3.02                51