Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 8 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)
 08/26/2018   13:51:44   ( -71.00, 149.72) 08/26/2018   13:50:37  ( -71.03, 147.30)   87.52                67
 08/26/2018   14:41:25   (  70.14, -43.93) 08/26/2018   14:41:06  (  70.13, -43.95)    1.16                19
 08/26/2018   15:30:55   ( -70.02, 123.54) 08/26/2018   15:31:48  ( -70.03, 123.52)    1.42                53
 08/29/2018   06:08:29   ( -70.19, -95.62) 08/29/2018   06:07:18  ( -70.20, -95.59)    1.03                71
 08/29/2018   06:57:56   (  70.09,  71.88) 08/29/2018   06:58:02  (  70.09,  71.88)    0.12                 6
 08/29/2018   07:47:29   ( -69.82,-120.87) 08/29/2018   07:48:41  ( -69.83,-120.41)   17.85                72
 08/31/2018   22:24:59   ( -70.15,  20.19) 08/31/2018   22:24:13  ( -70.15,  20.25)    2.08                46
 08/31/2018   23:14:26   (  70.04,-172.31) 08/31/2018   23:14:57  (  70.05,-172.29)    1.48                31
 09/03/2018   13:51:48   (  70.85, -30.50) 09/03/2018   13:50:40  (  70.90, -32.51)   73.11                68
 09/03/2018   14:41:29   ( -70.15, 136.08) 09/03/2018   14:41:10  ( -70.16, 136.00)    3.43                19
 09/03/2018   15:30:56   (  70.04, -56.43) 09/03/2018   15:31:53  (  70.01, -56.46)    3.20                57
 09/06/2018   06:08:30   (  70.19,  84.39) 09/06/2018   06:07:23  (  70.18,  84.42)    1.82                67
 09/06/2018   06:58:00   ( -70.09,-108.13) 09/06/2018   06:58:05  ( -70.07,-108.09)    2.68                 5
 09/06/2018   07:47:33   (  69.65,  58.90) 09/06/2018   07:48:43  (  69.65,  59.84)   36.33                70
 09/08/2018   22:25:01   (  70.13,-159.83) 09/08/2018   22:24:19  (  70.14,-159.75)    3.34                42
 09/08/2018   23:14:31   ( -70.03,   7.67) 09/08/2018   23:15:01  ( -70.03,   7.74)    2.69                30