Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 9 17.  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)
 09/19/2018   13:51:55   (  70.71, -30.72) 09/19/2018   13:50:46  (  70.78, -32.32)   58.93                69
 09/19/2018   14:41:34   ( -70.11, 136.02) 09/19/2018   14:41:17  ( -70.10, 136.07)    2.04                17
 09/19/2018   15:31:01   (  70.01, -56.48) 09/19/2018   15:32:01  (  69.99, -56.45)    2.06                60
 09/22/2018   06:08:34   (  70.20,  84.39) 09/22/2018   06:07:31  (  70.18,  84.41)    2.19                63
 09/22/2018   06:58:04   ( -70.09,-108.13) 09/22/2018   06:58:13  ( -70.08,-108.12)    0.91                 9
 09/22/2018   07:47:39   (  69.54,  58.76) 09/22/2018   07:48:49  (  69.55,  59.99)   47.82                70
 09/24/2018   22:25:03   (  70.17,-159.77) 09/24/2018   22:24:26  (  70.16,-159.79)    1.20                37
 09/24/2018   23:14:33   ( -70.06,   7.72) 09/24/2018   23:15:08  ( -70.06,   7.68)    1.37                35
 09/27/2018   13:51:58   ( -70.68, 149.23) 09/27/2018   13:50:48  ( -70.77, 147.70)   57.12                70
 09/27/2018   14:41:33   (  70.13, -43.93) 09/27/2018   14:41:22  (  70.14, -43.99)    2.23                11
 09/27/2018   15:31:03   ( -70.03, 123.56) 09/27/2018   15:32:04  ( -70.04, 123.48)    2.99                61
 09/30/2018   06:08:37   ( -70.16, -95.66) 09/30/2018   06:07:33  ( -70.18, -95.59)    3.50                64
 09/30/2018   06:58:03   (  70.10,  71.90) 09/30/2018   06:58:17  (  70.07,  71.89)    2.82                14
 09/30/2018   07:47:41   ( -69.56,-121.22) 09/30/2018   07:48:51  ( -69.55,-120.02)   46.58                70