Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 18.  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)
 04/20/2018   14:41:08   (  70.18, -43.99) 04/20/2018   14:40:43  (  70.17, -44.02)    1.91                25
 04/20/2018   15:30:38   ( -70.07, 123.48) 04/20/2018   15:31:25  ( -70.06, 123.46)    0.76                47
 04/23/2018   06:08:09   ( -70.24, -95.68) 04/23/2018   06:06:55  ( -70.28, -95.73)    5.17                74
 04/23/2018   06:57:36   (  70.13,  71.82) 04/23/2018   06:57:38  (  70.13,  71.81)    0.69                 2
 04/23/2018   07:47:07   ( -69.97,-120.78) 04/23/2018   07:48:19  ( -69.97,-120.63)    5.91                72
 04/25/2018   22:24:37   ( -70.19,  20.13) 04/25/2018   22:23:49  ( -70.19,  20.18)    1.77                48
 04/25/2018   23:14:04   (  70.08,-172.38) 04/25/2018   23:14:33  (  70.09,-172.36)    1.38                29
 04/28/2018   13:51:23   (  70.90, -30.57) 04/28/2018   13:50:15  (  70.94, -32.59)   73.58                68
 04/28/2018   14:41:05   ( -70.13, 135.93) 04/28/2018   14:40:44  ( -70.15, 136.01)    3.39                21
 04/28/2018   15:30:31   (  70.08, -56.50) 04/28/2018   15:31:28  (  70.06, -56.54)    2.61                57
 05/01/2018   06:08:01   (  70.23,  84.32) 05/01/2018   06:06:56  (  70.23,  84.34)    0.55                65
 05/01/2018   06:57:31   ( -70.13,-108.19) 05/01/2018   06:57:38  ( -70.12,-108.17)    1.33                 7
 05/01/2018   07:47:05   (  69.63,  58.76) 05/01/2018   07:48:15  (  69.65,  59.83)   41.80                70