Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 23.  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)
 12/24/2015   13:03:01   (  70.57, -18.64) 12/24/2015   13:01:49  (  70.64, -19.36)   27.60                72
 12/24/2015   13:52:34   ( -70.28, 148.58) 12/24/2015   13:52:26  ( -70.28, 148.52)    2.20                 8
 12/24/2015   14:42:01   (  70.19, -43.92) 12/24/2015   14:43:10  (  70.17, -44.00)    3.43                69
 12/27/2015   05:19:34   (  70.32,  96.88) 12/27/2015   05:18:36  (  70.30,  96.94)    3.24                58
 12/27/2015   06:09:04   ( -70.21, -95.65) 12/27/2015   06:09:18  ( -70.21, -95.60)    1.89                14
 12/27/2015   06:58:43   (  69.45,  70.93) 12/27/2015   06:59:50  (  69.46,  72.82)   73.72                67
 12/29/2015   21:36:03   (  70.28,-147.29) 12/29/2015   21:35:29  (  70.29,-147.27)    1.14                34
 12/29/2015   22:25:33   ( -70.17,  20.18) 12/29/2015   22:26:11  ( -70.20,  20.19)    2.45                38
 01/01/2016   13:02:57   ( -70.78, 161.68) 01/01/2016   13:01:47  ( -70.86, 160.28)   51.69                70
 01/01/2016   13:52:31   (  70.29, -31.41) 01/01/2016   13:52:22  (  70.28, -31.48)    2.68                 9
 01/01/2016   14:42:01   ( -70.12, 135.99) 01/01/2016   14:43:02  ( -70.13, 136.06)    2.96                61
 01/04/2016   05:19:32   ( -70.33, -83.11) 01/04/2016   05:18:29  ( -70.33, -83.09)    0.74                63
 01/04/2016   06:08:59   (  70.22,  84.37) 01/04/2016   06:09:13  (  70.22,  84.39)    0.57                14
 01/04/2016   06:58:37   ( -69.67,-108.75) 01/04/2016   06:59:47  ( -69.70,-107.52)   47.87                70