Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 9 16.  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)
 09/16/2018   22:25:04   ( -70.15,  20.20) 09/16/2018   22:24:22  ( -70.16,  20.22)    1.25                42
 09/16/2018   23:14:31   (  70.05,-172.30) 09/16/2018   23:15:06  (  70.05,-172.30)    0.27                35
 09/19/2018   13:51:55   (  70.68, -30.77) 09/19/2018   13:50:45  (  70.76, -32.28)   56.11                70
 09/19/2018   14:41:33   ( -70.13, 136.06) 09/19/2018   14:41:17  ( -70.13, 136.03)    1.09                16
 09/19/2018   15:31:00   (  70.03, -56.45) 09/19/2018   15:32:01  (  70.02, -56.49)    1.87                61
 09/22/2018   06:08:33   (  70.22,  84.43) 09/22/2018   06:07:31  (  70.21,  84.37)    2.55                62
 09/22/2018   06:58:03   ( -70.11,-108.09) 09/22/2018   06:58:13  ( -70.11,-108.16)    2.72                10
 09/22/2018   07:47:39   (  69.51,  58.71) 09/22/2018   07:48:48  (  69.52,  60.02)   50.87                69
 09/24/2018   22:25:04   (  70.13,-159.81) 09/24/2018   22:24:26  (  70.13,-159.75)    2.43                38
 09/24/2018   23:14:34   ( -70.03,   7.67) 09/24/2018   23:15:08  ( -70.03,   7.72)    1.77                34
 09/27/2018   13:51:58   ( -70.71, 149.27) 09/27/2018   13:50:48  ( -70.74, 147.74)   56.20                70
 09/27/2018   14:41:34   (  70.10, -43.98) 09/27/2018   14:41:22  (  70.11, -43.95)    1.55                12
 09/27/2018   15:31:04   ( -70.00, 123.52) 09/27/2018   15:32:04  ( -70.01, 123.52)    0.97                60