Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 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)
 04/17/2018   22:24:41   (  70.22,-159.81) 04/17/2018   22:23:49  (  70.21,-159.85)    2.06                52
 04/17/2018   23:14:11   ( -70.11,   7.65) 04/17/2018   23:14:31  ( -70.11,   7.62)    1.49                20
 04/18/2018   00:03:53   (  69.17, 174.04) 04/18/2018   00:04:59  (  69.15, 176.33)   90.67                66
 04/20/2018   14:41:08   (  70.18, -43.99) 04/20/2018   14:40:43  (  70.17, -44.02)    1.68                25
 04/20/2018   15:30:38   ( -70.07, 123.48) 04/20/2018   15:31:25  ( -70.06, 123.46)    0.96                47
 04/23/2018   06:08:09   ( -70.24, -95.67) 04/23/2018   06:06:55  ( -70.28, -95.73)    4.89                74
 04/23/2018   06:57:36   (  70.13,  71.82) 04/23/2018   06:57:38  (  70.13,  71.81)    0.71                 2
 04/23/2018   07:47:07   ( -69.97,-120.78) 04/23/2018   07:48:19  ( -69.97,-120.63)    5.65                72
 04/25/2018   22:24:37   ( -70.20,  20.14) 04/25/2018   22:23:49  ( -70.19,  20.18)    1.62                48
 04/25/2018   23:14:04   (  70.08,-172.37) 04/25/2018   23:14:33  (  70.09,-172.36)    0.93                29
 04/28/2018   13:51:23   (  70.90, -30.56) 04/28/2018   13:50:15  (  70.95, -32.59)   74.01                68
 04/28/2018   14:41:05   ( -70.14, 135.95) 04/28/2018   14:40:44  ( -70.15, 136.01)    2.36                21
 04/28/2018   15:30:32   (  70.03, -56.57) 04/28/2018   15:31:28  (  70.06, -56.54)    3.26                56