Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 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)
 04/14/2017   22:24:51   (  70.22,-159.82) 04/14/2017   22:23:41  (  70.20,-159.80)    1.88                70
 04/14/2017   23:14:21   ( -70.10,   7.65) 04/14/2017   23:14:23  ( -70.10,   7.67)    1.01                 2
 04/15/2017   00:03:52   (  69.78, 174.84) 04/15/2017   00:05:03  (  69.79, 175.46)   23.91                71
 04/17/2017   14:41:19   (  70.19, -43.99) 04/17/2017   14:40:37  (  70.21, -44.04)    2.92                42
 04/17/2017   15:30:49   ( -70.08, 123.49) 04/17/2017   15:31:18  ( -70.05, 123.52)    2.76                29
 04/20/2017   06:08:09   ( -70.86, -94.76) 04/20/2017   06:07:00  ( -70.89, -96.67)   69.99                69
 04/20/2017   06:57:47   (  70.15,  71.84) 04/20/2017   06:57:32  (  70.16,  71.80)    1.83                15
 04/20/2017   07:47:17   ( -70.04,-120.68) 04/20/2017   07:48:14  ( -70.06,-120.72)    2.24                57
 04/22/2017   22:24:47   ( -70.22,  20.18) 04/22/2017   22:23:42  ( -70.22,  20.18)    0.34                65
 04/22/2017   23:14:14   (  70.11,-172.34) 04/22/2017   23:14:26  (  70.12,-172.36)    1.30                12
 04/23/2017   00:03:51   ( -69.62,  -5.39) 04/23/2017   00:05:01  ( -69.64,  -4.33)   40.93                70
 04/25/2017   14:41:15   ( -70.18, 135.99) 04/25/2017   14:40:37  ( -70.18, 136.01)    0.68                38
 04/25/2017   15:30:42   (  70.06, -56.52) 04/25/2017   15:31:21  (  70.08, -56.53)    1.67                39
 04/28/2017   06:08:08   (  70.51,  84.72) 04/28/2017   06:06:56  (  70.56,  83.85)   32.60                72
 04/28/2017   06:57:43   ( -70.13,-108.20) 04/28/2017   06:57:32  ( -70.14,-108.16)    1.53                11
 04/28/2017   07:47:10   (  70.01,  59.28) 04/28/2017   07:48:16  (  70.04,  59.30)    3.19                66