Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2015 10 18.  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)
 10/18/2015   20:46:29   (  70.43,-134.69) 10/18/2015   20:45:24  (  70.42,-134.68)    1.23                65
 10/18/2015   21:35:59   ( -70.32,  32.78) 10/18/2015   21:36:06  ( -70.34,  32.76)    2.78                 7
 10/18/2015   22:25:33   (  69.83,-160.27) 10/18/2015   22:26:43  (  69.85,-159.17)   41.91                70
 10/21/2015   13:02:59   (  70.40, -18.85) 10/21/2015   13:02:16  (  70.40, -18.87)    0.98                43
 10/21/2015   13:52:29   ( -70.29, 148.62) 10/21/2015   13:52:58  ( -70.31, 148.58)    2.73                29
 10/24/2015   04:29:48   ( -71.28, -69.27) 10/24/2015   04:28:41  ( -71.32, -71.95)   95.53                67
 10/24/2015   05:19:30   (  70.36,  96.96) 10/24/2015   05:19:09  (  70.38,  96.92)    2.48                21
 10/24/2015   06:09:00   ( -70.25, -95.57) 10/24/2015   06:09:50  ( -70.24, -95.54)    1.96                50
 10/26/2015   20:46:33   ( -70.46,  45.34) 10/26/2015   20:45:19  ( -70.52,  45.15)    9.96                74
 10/26/2015   21:36:01   (  70.30,-147.25) 10/26/2015   21:36:01  (  70.31,-147.20)    2.31                 0
 10/26/2015   22:25:31   ( -70.19,  20.23) 10/26/2015   22:26:43  ( -70.22,  20.26)    2.90                72
 10/29/2015   13:03:04   ( -70.39, 161.11) 10/29/2015   13:02:10  ( -70.41, 161.11)    2.03                54
 10/29/2015   13:52:31   (  70.28, -31.40) 10/29/2015   13:52:54  (  70.30, -31.42)    3.02                23
 10/29/2015   14:42:15   ( -69.41, 135.02) 10/29/2015   14:43:21  ( -69.41, 137.22)   86.23                66
 11/01/2015   05:19:33   ( -70.35, -83.06) 11/01/2015   05:19:01  ( -70.35, -83.03)    1.37                32
 11/01/2015   06:09:00   (  70.24,  84.42) 11/01/2015   06:09:45  (  70.25,  84.43)    0.96                45