Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 25.  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)
 04/25/2018   22:24:38   ( -70.19,  20.13) 04/25/2018   22:23:49  ( -70.22,  20.13)    2.70                49
 04/25/2018   23:14:05   (  70.09,-172.37) 04/25/2018   23:14:33  (  70.11,-172.39)    2.11                28
 04/28/2018   13:51:24   (  70.95, -30.50) 04/28/2018   13:50:16  (  71.02, -32.71)   80.39                68
 04/28/2018   14:41:06   ( -70.18, 135.99) 04/28/2018   14:40:44  ( -70.18, 135.96)    0.91                22
 04/28/2018   15:30:33   (  70.07, -56.52) 04/28/2018   15:31:28  (  70.08, -56.57)    1.99                55
 05/01/2018   06:08:04   (  70.27,  84.36) 05/01/2018   06:06:57  (  70.25,  84.31)    3.10                67
 05/01/2018   06:57:34   ( -70.16,-108.16) 05/01/2018   06:57:39  ( -70.14,-108.21)    2.51                 5
 05/01/2018   07:47:07   (  69.72,  58.87) 05/01/2018   07:48:17  (  69.72,  59.73)   33.12                70
 05/03/2018   22:24:33   (  70.19,-159.88) 05/03/2018   22:23:52  (  70.22,-159.87)    3.15                41
 05/03/2018   23:14:03   ( -70.08,   7.61) 05/03/2018   23:14:34  ( -70.11,   7.61)    3.19                31
 05/06/2018   13:51:23   ( -70.82, 149.29) 05/06/2018   13:50:14  ( -70.91, 147.47)   67.05                69
 05/06/2018   14:41:00   (  70.16, -44.04) 05/06/2018   14:40:46  (  70.19, -44.05)    3.20                14
 05/06/2018   15:30:30   ( -70.06, 123.45) 05/06/2018   15:31:28  ( -70.08, 123.43)    2.70                58