Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 1 2.  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)
 01/03/2018   02:56:23   (  68.34, 134.56) 01/03/2018   02:56:57  (  68.35, 134.59)    1.76                34
 01/03/2018   03:47:04   ( -68.19, -57.95) 01/03/2018   03:46:28  ( -68.18, -57.98)    2.30                36
 01/05/2018   18:22:41   ( -68.95,  82.21) 01/05/2018   18:23:51  ( -68.84,  83.43)   50.45                70
 01/05/2018   19:13:15   (  68.30,-109.62) 01/05/2018   19:13:26  (  68.29,-109.60)    1.09                11
 01/05/2018   20:03:56   ( -68.15,  57.88) 01/05/2018   20:02:56  ( -68.18,  57.90)    3.03                60
 01/08/2018   10:39:24   ( -68.37,-161.25) 01/08/2018   10:40:28  ( -68.39,-161.25)    1.17                64
 01/08/2018   11:30:08   (  68.26,   6.20) 01/08/2018   11:29:55  (  68.27,   6.26)    2.99                13
 01/08/2018   12:20:43   ( -67.79, 174.11) 01/08/2018   12:19:31  ( -67.83, 173.38)   31.03                72
 01/11/2018   02:56:17   ( -68.34, -45.43) 01/11/2018   02:56:57  ( -68.36, -45.40)    2.68                40
 01/11/2018   03:47:00   (  68.17, 122.09) 01/11/2018   03:46:25  (  68.19, 122.04)    3.01                35
 01/13/2018   18:22:39   (  68.99, -97.83) 01/13/2018   18:23:48  (  68.87, -96.52)   54.28                69
 01/13/2018   19:13:10   ( -68.30,  70.39) 01/13/2018   19:13:26  ( -68.32,  70.44)    2.56                16
 01/13/2018   20:03:53   (  68.13,-122.09) 01/13/2018   20:02:54  (  68.15,-122.12)    1.93                59