Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 14.  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   ( -70.45, 161.18) 12/16/2015   13:01:52  ( -70.54, 160.80)   17.60                73
 12/16/2015   13:52:33   (  70.29, -31.40) 12/16/2015   13:52:33  (  70.28, -31.48)    3.18                 0
 12/16/2015   14:42:03   ( -70.18, 136.07) 12/16/2015   14:43:15  ( -70.18, 135.99)    2.87                72
 12/19/2015   05:19:35   ( -70.37, -83.06) 12/19/2015   05:18:41  ( -70.35, -83.13)    3.09                54
 12/19/2015   06:09:03   (  70.21,  84.36) 12/19/2015   06:09:24  (  70.19,  84.42)    3.01                21
 12/19/2015   06:58:46   ( -69.38,-109.15) 12/19/2015   06:59:53  ( -69.41,-107.09)   80.57                67
 12/21/2015   21:36:05   ( -70.33,  32.76) 12/21/2015   21:35:34  ( -70.32,  32.68)    2.96                31
 12/21/2015   22:25:33   (  70.17,-159.83) 12/21/2015   22:26:17  (  70.17,-159.76)    2.29                44
 12/24/2015   13:03:01   (  70.60, -18.59) 12/24/2015   13:01:50  (  70.66, -19.40)   30.86                71
 12/24/2015   13:52:35   ( -70.28, 148.57) 12/24/2015   13:52:26  ( -70.25, 148.57)    3.31                 9
 12/24/2015   14:42:02   (  70.17, -43.95) 12/24/2015   14:43:10  (  70.14, -43.96)    2.59                68
 12/27/2015   05:19:35   (  70.31,  96.87) 12/27/2015   05:18:37  (  70.33,  96.90)    2.01                58
 12/27/2015   06:09:05   ( -70.21, -95.65) 12/27/2015   06:09:19  ( -70.23, -95.63)    2.10                14
 12/27/2015   06:58:43   (  69.49,  71.00) 12/27/2015   06:59:51  (  69.49,  72.78)   69.61                68