Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 10 19.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/20/2018   19:13:34   (  68.44,-109.72) 10/20/2018   19:14:10  (  68.42,-109.72)    3.11                36
 10/20/2018   20:04:15   ( -68.32,  57.76) 10/20/2018   20:03:40  ( -68.31,  57.78)    1.30                35
 10/23/2018   10:39:53   ( -69.02,-162.04) 10/23/2018   10:41:03  ( -68.91,-160.88)   48.11                70
 10/23/2018   11:30:28   (  68.41,   6.09) 10/23/2018   11:30:37  (  68.40,   6.14)    2.44                 9
 10/23/2018   12:21:08   ( -68.23, 173.64) 10/23/2018   12:20:08  ( -68.24, 173.58)    2.80                60
 10/26/2018   02:56:36   ( -68.46, -45.51) 10/26/2018   02:57:37  ( -68.44, -45.57)    2.56                61
 10/26/2018   03:47:20   (  68.32, 121.97) 10/26/2018   03:47:04  (  68.32, 121.93)    1.43                16
 10/26/2018   04:37:53   ( -67.76, -70.01) 10/26/2018   04:36:42  ( -67.78, -71.07)   44.73                71
 10/28/2018   19:13:30   ( -68.42,  70.30) 10/28/2018   19:14:04  ( -68.42,  70.29)    0.46                34
 10/28/2018   20:04:14   (  68.29,-122.23) 10/28/2018   20:03:31  (  68.29,-122.21)    0.53                43
 10/31/2018   10:39:47   (  68.74,  18.33) 10/31/2018   10:40:58  (  68.65,  18.83)   22.77                71
 10/31/2018   11:30:24   ( -68.39,-173.89) 10/31/2018   11:30:31  ( -68.39,-173.86)    1.47                 7
 10/31/2018   12:21:08   (  68.27,  -6.42) 10/31/2018   12:19:58  (  68.26,  -6.37)    2.44                70