Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 11 20.  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)
 11/21/2018   18:22:57   ( -68.97,  82.19) 11/21/2018   18:24:07  ( -68.85,  83.34)   48.24                70
 11/21/2018   19:13:32   (  68.36,-109.69) 11/21/2018   19:13:41  (  68.35,-109.63)    2.76                 9
 11/21/2018   20:04:12   ( -68.18,  57.87) 11/21/2018   20:03:12  ( -68.18,  57.81)    2.52                60
 11/24/2018   10:39:42   ( -68.42,-161.31) 11/24/2018   10:40:41  ( -68.42,-161.29)    0.88                59
 11/24/2018   11:30:26   (  68.29,   6.16) 11/24/2018   11:30:08  (  68.31,   6.22)    2.65                18
 11/24/2018   12:20:57   ( -67.62, 174.32) 11/24/2018   12:19:47  ( -67.70, 173.14)   50.64                70
 11/27/2018   02:56:36   ( -68.36, -45.46) 11/27/2018   02:57:08  ( -68.38, -45.45)    2.85                32
 11/27/2018   03:47:20   (  68.23, 122.01) 11/27/2018   03:46:36  (  68.21, 121.99)    2.41                44
 11/29/2018   18:22:52   (  68.60, -97.32) 11/29/2018   18:24:03  (  68.56, -96.97)   14.83                71
 11/29/2018   19:13:30   ( -68.29,  70.39) 11/29/2018   19:13:36  ( -68.29,  70.33)    2.47                 6
 11/29/2018   20:04:14   (  68.17,-122.15) 11/29/2018   20:03:03  (  68.17,-122.16)    0.70                71
 12/02/2018   10:39:42   (  68.38,  18.73) 12/02/2018   10:40:31  (  68.41,  18.73)    3.43                49
 12/02/2018   11:30:23   ( -68.23,-173.76) 12/02/2018   11:30:02  ( -68.25,-173.82)    3.24                21
 12/02/2018   12:20:51   (  67.25,  -5.25) 12/02/2018   12:19:44  (  67.29,  -7.28)   87.24                67