Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 12 4.  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)
 12/05/2018   02:06:09   ( -69.34, -34.12) 12/05/2018   02:07:16  ( -69.23, -31.96)   85.60                67
 12/05/2018   02:56:37   (  68.36, 134.52) 12/05/2018   02:56:57  (  68.36, 134.58)    2.56                20
 12/05/2018   03:47:18   ( -68.23, -57.99) 12/05/2018   03:46:27  ( -68.23, -57.93)    2.73                51
 12/07/2018   18:22:47   ( -68.43,  82.88) 12/07/2018   18:23:56  ( -68.45,  82.94)    3.35                69
 12/07/2018   19:13:31   (  68.31,-109.65) 12/07/2018   19:13:24  (  68.29,-109.60)    2.44                 7
 12/07/2018   20:04:09   ( -68.01,  58.05) 12/07/2018   20:02:56  ( -68.06,  57.76)   13.64                73
 12/10/2018   10:39:40   ( -68.38,-161.28) 12/10/2018   10:40:22  ( -68.39,-161.23)    2.53                42
 12/10/2018   11:30:24   (  68.26,   6.19) 12/10/2018   11:29:50  (  68.23,   6.22)    3.08                34
 12/13/2018   02:06:02   (  68.95, 146.41) 12/13/2018   02:07:12  (  68.84, 147.58)   48.57                70
 12/13/2018   02:56:34   ( -68.32, -45.44) 12/13/2018   02:56:49  ( -68.33, -45.41)    1.92                15
 12/13/2018   03:47:17   (  68.15, 122.09) 12/13/2018   03:46:17  (  68.17, 122.04)    2.85                60
 12/15/2018   18:22:46   (  68.37, -97.05) 12/15/2018   18:23:46  (  68.39, -97.08)    3.22                60
 12/15/2018   19:13:28   ( -68.27,  70.40) 12/15/2018   19:13:16  ( -68.28,  70.42)    1.51                12
 12/15/2018   20:04:02   (  67.62,-121.48) 12/15/2018   20:02:52  (  67.67,-122.65)   49.70                70
 12/18/2018   10:39:40   (  68.32,  18.78) 12/18/2018   10:40:13  (  68.34,  18.75)    2.46                33
 12/18/2018   11:30:22   ( -68.22,-173.77) 12/18/2018   11:29:43  ( -68.23,-173.75)    1.29                39