Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 7 27.  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)
 07/28/2015   03:40:07   ( -70.57, -57.99) 07/28/2015   03:39:02  ( -70.54, -58.01)    3.10                65
 07/28/2015   04:29:35   (  70.42, 109.43) 07/28/2015   04:29:46  (  70.44, 109.46)    2.72                11
 07/28/2015   05:19:11   ( -69.97, -83.58) 07/28/2015   05:20:21  ( -69.97, -82.50)   40.84                70
 07/30/2015   19:56:37   ( -70.49,  57.78) 07/30/2015   19:55:53  ( -70.49,  57.84)    2.11                44
 07/30/2015   20:46:04   (  70.39,-134.72) 07/30/2015   20:46:37  (  70.39,-134.70)    0.98                33
 08/02/2015   11:23:25   (  71.23,   7.17) 08/02/2015   11:22:17  (  71.28,   4.98)   78.46                68
 08/02/2015   12:13:07   ( -70.46, 173.62) 08/02/2015   12:12:45  ( -70.44, 173.68)    3.17                22
 08/02/2015   13:02:34   (  70.36, -18.89) 08/02/2015   13:03:29  (  70.35, -18.86)    1.76                55
 08/05/2015   03:40:07   (  70.54, 121.98) 08/05/2015   03:38:56  (  70.56, 121.96)    2.50                71
 08/05/2015   04:29:37   ( -70.43, -70.55) 08/05/2015   04:29:38  ( -70.45, -70.56)    2.27                 1
 08/05/2015   05:19:07   (  70.16,  96.70) 08/05/2015   05:20:18  (  70.14,  97.23)   19.92                71
 08/07/2015   19:56:37   (  70.49,-122.20) 08/07/2015   19:55:48  (  70.51,-122.20)    2.25                49
 08/07/2015   20:46:07   ( -70.39,  45.28) 08/07/2015   20:46:30  ( -70.40,  45.29)    1.62                23
 08/10/2015   12:13:06   (  70.45,  -6.38) 08/10/2015   12:12:39  (  70.47,  -6.36)    2.97                27
 08/10/2015   13:02:36   ( -70.34, 161.10) 08/10/2015   13:03:21  ( -70.36, 161.13)    2.06                45