Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 12 28.  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)
 12/29/2015   21:36:03   (  70.30,-147.28) 12/29/2015   21:35:29  (  70.28,-147.26)    1.78                34
 12/29/2015   22:25:33   ( -70.18,  20.19) 12/29/2015   22:26:11  ( -70.20,  20.19)    1.68                38
 01/01/2016   13:02:56   ( -70.79, 161.70) 01/01/2016   13:01:46  ( -70.86, 160.28)   52.50                70
 01/01/2016   13:52:31   (  70.26, -31.46) 01/01/2016   13:52:21  (  70.28, -31.48)    2.26                10
 01/01/2016   14:42:01   ( -70.14, 136.01) 01/01/2016   14:43:02  ( -70.14, 136.06)    1.85                61
 01/04/2016   05:19:33   ( -70.31, -83.14) 01/04/2016   05:18:29  ( -70.33, -83.10)    3.13                64
 01/04/2016   06:09:00   (  70.20,  84.35) 01/04/2016   06:09:13  (  70.22,  84.39)    2.26                13
 01/04/2016   06:58:37   ( -69.71,-108.71) 01/04/2016   06:59:47  ( -69.71,-107.53)   45.76                70
 01/06/2016   21:36:01   ( -70.30,  32.73) 01/06/2016   21:35:21  ( -70.28,  32.76)    3.11                40
 01/06/2016   22:25:28   (  70.19,-159.78) 01/06/2016   22:26:06  (  70.21,-159.83)    3.18                38
 01/09/2016   13:02:51   (  70.83, -18.23) 01/09/2016   13:01:41  (  70.84, -19.68)   52.97                70
 01/09/2016   13:52:29   ( -70.28, 148.59) 01/09/2016   13:52:14  ( -70.27, 148.54)    2.24                15
 01/09/2016   14:41:56   (  70.17, -43.93) 01/09/2016   14:42:58  (  70.16, -43.98)    2.31                62