Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 2 16.  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)
 02/17/2017   22:25:20   ( -70.27,  20.29) 02/17/2017   22:24:07  ( -70.34,  19.91)   16.27                73
 02/17/2017   23:14:49   (  70.06,-172.37) 02/17/2017   23:14:48  (  70.06,-172.34)    1.42                 1
 02/18/2017   00:04:19   ( -69.95,  -4.90) 02/18/2017   00:05:29  ( -69.93,  -4.83)    3.13                70
 02/20/2017   14:41:49   ( -70.18, 136.03) 02/20/2017   14:40:56  ( -70.16, 135.98)    3.01                53
 02/20/2017   15:31:17   (  70.02, -56.55) 02/20/2017   15:31:40  (  70.03, -56.52)    1.83                23
 02/20/2017   16:21:00   ( -69.19, 109.96) 02/20/2017   16:22:07  ( -69.16, 112.07)   83.25                67
 02/23/2017   06:58:18   ( -70.14,-108.15) 02/23/2017   06:57:49  ( -70.13,-108.20)    2.08                29
 02/23/2017   07:47:45   (  70.03,  59.34) 02/23/2017   07:48:33  (  70.01,  59.29)    2.89                48
 02/25/2017   22:25:15   (  70.31,-159.66) 02/25/2017   22:24:03  (  70.35,-160.09)   16.61                72
 02/25/2017   23:14:47   ( -70.09,   7.66) 02/25/2017   23:14:42  ( -70.11,   7.61)    2.64                 5
 02/26/2017   00:04:14   (  69.98, 175.15) 02/26/2017   00:05:26  (  69.99, 175.10)    2.24                72
 02/28/2017   14:41:46   (  70.14, -44.02) 02/28/2017   14:40:52  (  70.12, -43.95)    3.37                54
 02/28/2017   15:31:16   ( -70.04, 123.47) 02/28/2017   15:31:34  ( -70.03, 123.50)    1.55                18