Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 16.  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)
 12/16/2015   13:03:05   ( -70.43, 161.16) 12/16/2015   13:01:51  ( -70.50, 160.87)   12.97                74
 12/16/2015   13:52:33   (  70.28, -31.42) 12/16/2015   13:52:33  (  70.29, -31.49)    2.80                 0
 12/16/2015   14:42:03   ( -70.17, 136.05) 12/16/2015   14:43:14  ( -70.14, 136.06)    3.13                71
 12/19/2015   05:19:35   ( -70.35, -83.08) 12/19/2015   05:18:41  ( -70.36, -83.15)    2.81                54
 12/19/2015   06:09:03   (  70.20,  84.34) 12/19/2015   06:09:24  (  70.21,  84.41)    2.66                21
 12/19/2015   06:58:46   ( -69.37,-109.17) 12/19/2015   06:59:53  ( -69.42,-107.11)   80.77                67
 12/21/2015   21:36:05   ( -70.31,  32.74) 12/21/2015   21:35:33  ( -70.29,  32.74)    2.63                32
 12/21/2015   22:25:32   (  70.21,-159.77) 12/21/2015   22:26:17  (  70.18,-159.79)    2.94                45
 12/24/2015   13:03:01   (  70.59, -18.61) 12/24/2015   13:01:49  (  70.63, -19.35)   27.94                72
 12/24/2015   13:52:35   ( -70.26, 148.54) 12/24/2015   13:52:26  ( -70.27, 148.54)    1.62                 9
 12/24/2015   14:42:02   (  70.15, -43.97) 12/24/2015   14:43:10  (  70.17, -43.99)    2.12                68
 12/27/2015   05:19:34   (  70.35,  96.92) 12/27/2015   05:18:37  (  70.36,  96.85)    2.90                57
 12/27/2015   06:09:04   ( -70.24, -95.60) 12/27/2015   06:09:19  ( -70.26, -95.68)    3.54                15
 12/27/2015   06:58:43   (  69.47,  70.97) 12/27/2015   06:59:50  (  69.47,  72.82)   71.91                67
 12/29/2015   21:36:02   (  70.32,-147.24) 12/29/2015   21:35:28  (  70.31,-147.29)    2.33                34
 12/29/2015   22:25:32   ( -70.22,  20.24) 12/29/2015   22:26:10  ( -70.21,  20.18)    2.47                38