Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 9 20.  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)
 09/22/2018   06:08:34   (  70.21,  84.40) 09/22/2018   06:07:31  (  70.18,  84.41)    2.96                63
 09/22/2018   06:58:04   ( -70.10,-108.12) 09/22/2018   06:58:13  ( -70.09,-108.13)    1.16                 9
 09/22/2018   07:47:39   (  69.55,  58.77) 09/22/2018   07:48:49  (  69.55,  59.98)   47.16                70
 09/24/2018   22:25:05   (  70.14,-159.81) 09/24/2018   22:24:27  (  70.16,-159.79)    2.25                38
 09/24/2018   23:14:34   ( -70.03,   7.67) 09/24/2018   23:15:08  ( -70.06,   7.67)    3.38                34
 09/27/2018   13:51:58   ( -70.73, 149.29) 09/27/2018   13:50:48  ( -70.77, 147.69)   58.87                70
 09/27/2018   14:41:34   (  70.13, -43.95) 09/27/2018   14:41:22  (  70.14, -43.99)    1.79                12
 09/27/2018   15:31:04   ( -70.03, 123.54) 09/27/2018   15:32:04  ( -70.04, 123.48)    2.95                60
 09/30/2018   06:08:38   ( -70.18, -95.64) 09/30/2018   06:07:33  ( -70.18, -95.58)    2.28                65
 09/30/2018   06:58:05   (  70.06,  71.84) 09/30/2018   06:58:17  (  70.07,  71.89)    2.07                12
 09/30/2018   07:47:42   ( -69.58,-121.20) 09/30/2018   07:48:52  ( -69.60,-120.09)   43.05                70
 10/02/2018   22:25:08   ( -70.17,  20.23) 10/02/2018   22:24:29  ( -70.16,  20.21)    1.55                39
 10/02/2018   23:14:35   (  70.06,-172.29) 10/02/2018   23:15:13  (  70.05,-172.31)    0.94                38