Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 8 10.  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)
 08/12/2017   22:25:18   ( -70.70,  20.99) 08/12/2017   22:24:09  ( -70.74,  19.34)   61.02                69
 08/12/2017   23:14:55   (  70.05,-172.32) 08/12/2017   23:14:42  (  70.06,-172.27)    2.08                13
 08/13/2017   00:04:25   ( -69.94,  -4.84) 08/13/2017   00:05:24  ( -69.96,  -4.80)    2.40                59
 08/15/2017   14:41:58   ( -70.15, 136.06) 08/15/2017   14:40:55  ( -70.14, 136.06)    1.31                63
 08/15/2017   15:31:25   (  70.04, -56.45) 08/15/2017   15:31:39  (  70.04, -56.47)    1.20                14
 08/15/2017   16:21:03   ( -69.50, 110.43) 08/15/2017   16:22:13  ( -69.51, 111.63)   46.51                70
 08/18/2017   06:58:29   ( -70.09,-108.15) 08/18/2017   06:57:52  ( -70.11,-108.14)    2.69                37
 08/18/2017   07:47:56   (  69.98,  59.34) 08/18/2017   07:48:35  (  69.96,  59.41)    3.21                39
 08/20/2017   22:25:23   (  70.45,-159.37) 08/20/2017   22:24:12  (  70.52,-160.32)   35.92                71
 08/20/2017   23:14:58   ( -70.08,   7.72) 08/20/2017   23:14:48  ( -70.09,   7.66)    2.36                10
 08/21/2017   00:04:25   (  69.96, 175.20) 08/21/2017   00:05:31  (  69.94, 175.20)    2.78                66
 08/23/2017   14:41:59   (  70.11, -44.00) 08/23/2017   14:41:02  (  70.13, -43.95)    3.09                57
 08/23/2017   15:31:29   ( -70.01, 123.50) 08/23/2017   15:31:44  ( -70.02, 123.54)    1.75                15
 08/23/2017   16:21:08   (  69.23, -69.92) 08/23/2017   16:22:15  (  69.23, -68.00)   75.78                67