Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 9 20.  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)
 09/22/2015   04:29:56   ( -70.52, -70.46) 09/22/2015   04:28:43  ( -70.50, -70.56)    4.02                73
 09/22/2015   05:19:24   (  70.36,  96.95) 09/22/2015   05:19:27  (  70.38,  96.95)    2.21                 3
 09/22/2015   06:08:54   ( -70.25, -95.58) 09/22/2015   06:10:07  ( -70.20, -95.46)    6.94                73
 09/24/2015   20:46:27   ( -70.46,  45.34) 09/24/2015   20:45:34  ( -70.47,  45.26)    3.15                53
 09/24/2015   21:35:54   (  70.36,-147.18) 09/24/2015   21:36:18  (  70.35,-147.23)    2.26                24
 09/24/2015   22:25:38   ( -69.48,  19.23) 09/24/2015   22:26:45  ( -69.48,  21.38)   83.80                67
 09/27/2015   13:02:58   ( -70.40, 161.13) 09/27/2015   13:02:24  ( -70.40, 161.16)    1.39                34
 09/27/2015   13:52:25   (  70.29, -31.39) 09/27/2015   13:53:08  (  70.27, -31.34)    2.71                43
 09/30/2015   04:29:52   (  70.82, 110.00) 09/30/2015   04:28:41  (  70.88, 108.84)   42.67                71
 09/30/2015   05:19:28   ( -70.39, -83.01) 09/30/2015   05:19:15  ( -70.38, -83.03)    1.46                13
 09/30/2015   06:08:55   (  70.28,  84.47) 09/30/2015   06:09:59  (  70.26,  84.47)    2.19                64
 10/02/2015   20:46:27   (  70.47,-134.65) 10/02/2015   20:45:23  (  70.45,-134.68)    2.89                64
 10/02/2015   21:35:57   ( -70.37,  32.84) 10/02/2015   21:36:05  ( -70.36,  32.77)    2.52                 8
 10/02/2015   22:25:32   (  69.82,-160.30) 10/02/2015   22:26:41  (  69.82,-159.09)   46.46                69