Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 7 19.  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)
 07/19/2017   22:25:01   (  71.01,-158.50) 07/19/2017   22:23:55  (  71.09,-161.18)   96.96                66
 07/19/2017   23:14:46   ( -70.08,   7.73) 07/19/2017   23:14:20  ( -70.11,   7.73)    3.30                26
 07/20/2017   00:04:13   (  69.98, 175.24) 07/20/2017   00:05:04  (  69.99, 175.21)    1.94                51
 07/22/2017   14:41:46   (  70.22, -43.82) 07/22/2017   14:40:33  (  70.23, -44.00)    6.81                73
 07/22/2017   15:31:17   ( -70.05, 123.58) 07/22/2017   15:31:13  ( -70.03, 123.63)    3.28                 4
 07/22/2017   16:20:44   (  69.95, -68.93) 07/22/2017   16:21:57  (  69.92, -68.90)    3.44                73
 07/25/2017   06:58:17   (  70.13,  71.93) 07/25/2017   06:57:24  (  70.11,  71.97)    3.16                53
 07/25/2017   07:47:47   ( -70.03,-120.59) 07/25/2017   07:48:06  ( -70.01,-120.56)    2.39                19
 07/25/2017   08:37:29   (  69.09,  45.79) 07/25/2017   08:38:35  (  69.10,  48.06)   90.20                66
 07/27/2017   23:14:48   (  70.09,-172.25) 07/27/2017   23:14:18  (  70.09,-172.23)    1.04                30
 07/28/2017   00:04:18   ( -69.99,  -4.76) 07/28/2017   00:05:00  ( -69.98,  -4.75)    1.02                42
 07/30/2017   14:41:46   ( -70.49, 136.57) 07/30/2017   14:40:35  ( -70.53, 135.54)   38.34                71
 07/30/2017   15:31:19   (  70.05, -56.43) 07/30/2017   15:31:12  (  70.07, -56.42)    2.02                 7
 07/30/2017   16:20:49   ( -69.95, 111.07) 07/30/2017   16:21:54  ( -69.96, 111.06)    0.89                65
 08/02/2017   06:58:23   ( -70.13,-108.09) 08/02/2017   06:57:22  ( -70.15,-108.07)    2.39                61
 08/02/2017   07:47:50   (  70.01,  59.39) 08/02/2017   07:48:05  (  70.00,  59.46)    2.73                15
 08/02/2017   08:37:29   ( -69.42,-133.79) 08/02/2017   08:38:38  ( -69.41,-132.36)   55.99                69