Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 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)
 02/04/2018   02:56:02   (  68.32, 134.63) 02/04/2018   02:56:57  (  68.33, 134.57)    2.60                55
 02/04/2018   03:46:43   ( -68.20, -57.89) 02/04/2018   03:46:27  ( -68.23, -57.93)    3.00                16
 02/04/2018   04:37:15   (  67.41, 110.38) 02/04/2018   04:36:06  (  67.44, 108.82)   66.91                69
 02/06/2018   19:12:54   (  68.31,-109.58) 02/06/2018   19:13:26  (  68.30,-109.59)    1.23                32
 02/06/2018   20:03:35   ( -68.19,  57.90) 02/06/2018   20:02:56  ( -68.20,  57.92)    1.62                39
 02/09/2018   10:39:12   ( -68.91,-161.90) 02/09/2018   10:40:22  ( -68.78,-160.77)   47.92                70
 02/09/2018   11:29:46   (  68.25,   6.28) 02/09/2018   11:29:56  (  68.28,   6.26)    3.32                10
 02/09/2018   12:20:27   ( -68.12, 173.76) 02/09/2018   12:19:27  ( -68.12, 173.71)    2.42                60
 02/12/2018   02:55:55   ( -68.37, -45.40) 02/12/2018   02:56:59  ( -68.38, -45.39)    0.90                64
 02/12/2018   03:46:39   (  68.24, 122.07) 02/12/2018   03:46:26  (  68.25, 122.11)    2.17                13
 02/12/2018   04:37:14   ( -67.79, -70.04) 02/12/2018   04:36:02  ( -67.82, -70.76)   30.62                72
 02/14/2018   19:12:47   ( -68.31,  70.46) 02/14/2018   19:13:30  ( -68.31,  70.40)    2.29                43
 02/14/2018   20:03:31   (  68.18,-122.07) 02/14/2018   20:02:57  (  68.18,-122.10)    1.29                34
 02/17/2018   10:39:10   (  69.08,  17.89) 02/17/2018   10:40:19  (  68.94,  19.43)   63.36                69
 02/17/2018   11:29:39   ( -68.30,-173.76) 02/17/2018   11:29:59  ( -68.30,-173.73)    0.94                20
 02/17/2018   12:20:23   (  68.17,  -6.29) 02/17/2018   12:19:26  (  68.17,  -6.24)    2.06                57