Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2016 1 21.  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)
 01/22/2016   21:36:02   ( -70.31,  32.73) 01/22/2016   21:35:07  ( -70.32,  32.71)    0.94                55
 01/22/2016   22:25:29   (  70.21,-159.78) 01/22/2016   22:25:51  (  70.19,-159.78)    2.65                22
 01/22/2016   23:15:12   ( -69.39,   6.71) 01/22/2016   23:16:19  ( -69.38,   8.74)   79.30                67
 01/25/2016   13:52:30   ( -70.30, 148.58) 01/25/2016   13:51:58  ( -70.29, 148.53)    2.34                32
 01/25/2016   14:41:58   (  70.14, -44.00) 01/25/2016   14:42:42  (  70.17, -43.97)    2.97                44
 01/28/2016   05:19:25   (  70.60,  97.28) 01/28/2016   05:18:14  (  70.66,  96.40)   33.09                71
 01/28/2016   06:09:00   ( -70.22, -95.65) 01/28/2016   06:08:49  ( -70.22, -95.58)    2.63                11
 01/28/2016   06:58:27   (  70.11,  71.84) 01/28/2016   06:59:34  (  70.15,  71.84)    3.70                67
 01/30/2016   21:35:58   (  70.34,-147.23) 01/30/2016   21:35:00  (  70.33,-147.30)    2.98                58
 01/30/2016   22:25:29   ( -70.18,  20.18) 01/30/2016   22:25:41  ( -70.20,  20.22)    2.56                12
 01/30/2016   23:15:06   (  69.52,-173.10) 01/30/2016   23:16:14  (  69.49,-171.42)   65.69                68
 02/02/2016   13:52:27   (  70.29, -31.42) 02/02/2016   13:51:51  (  70.27, -31.42)    2.60                36
 02/02/2016   14:41:57   ( -70.19, 136.07) 02/02/2016   14:42:33  ( -70.19, 136.02)    1.76                36