Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 4 13.  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)
 04/15/2019   14:41:22   ( -70.21, 136.06) 04/15/2019   14:40:28  ( -70.20, 135.98)    2.98                54
 04/15/2019   15:30:50   (  70.05, -56.53) 04/15/2019   15:31:11  (  70.04, -56.45)    3.22                21
 04/15/2019   16:20:33   ( -69.22, 109.98) 04/15/2019   16:21:40  ( -69.26, 112.01)   79.80                67
 04/18/2019   06:08:04   (  71.13,  85.69) 04/18/2019   06:06:58  (  71.13,  82.92)   99.94                66
 04/18/2019   06:57:50   ( -70.15,-108.15) 04/18/2019   06:57:23  ( -70.14,-108.16)    1.35                27
 04/18/2019   07:47:17   (  70.04,  59.34) 04/18/2019   07:48:07  (  70.03,  59.32)    1.32                50
 04/20/2019   22:24:49   (  70.19,-159.84) 04/20/2019   22:23:37  (  70.19,-159.78)    2.46                72
 04/20/2019   23:14:19   ( -70.09,   7.65) 04/20/2019   23:14:19  ( -70.09,   7.69)    1.86                 0
 04/21/2019   00:03:49   (  69.81, 174.90) 04/21/2019   00:05:00  (  69.82, 175.40)   19.41                71
 04/23/2019   14:41:17   (  70.18, -43.98) 04/23/2019   14:40:34  (  70.19, -44.02)    1.59                43
 04/23/2019   15:30:47   ( -70.08, 123.51) 04/23/2019   15:31:16  ( -70.08, 123.46)    1.88                29
 04/26/2019   06:08:07   ( -70.88, -94.71) 04/26/2019   06:06:59  ( -70.92, -96.74)   73.93                68
 04/26/2019   06:57:45   (  70.16,  71.87) 04/26/2019   06:57:30  (  70.14,  71.82)    2.99                15
 04/26/2019   07:47:16   ( -70.01,-120.71) 04/26/2019   07:48:12  ( -70.03,-120.70)    2.35                56