Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 2 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)
 02/22/2017   10:39:19   ( -68.42,-161.30) 02/22/2017   10:40:17  ( -68.41,-161.29)    1.86                58
 02/22/2017   11:30:03   (  68.28,   6.19) 02/22/2017   11:29:44  (  68.29,   6.21)    1.03                19
 02/22/2017   12:20:34   ( -67.62, 174.33) 02/22/2017   12:19:23  ( -67.69, 173.15)   50.65                71
 02/25/2017   02:56:11   ( -68.34, -45.42) 02/25/2017   02:56:48  ( -68.36, -45.47)    2.94                37
 02/25/2017   03:46:56   (  68.26, 121.99) 02/25/2017   03:46:15  (  68.24, 122.03)    3.09                41
 02/27/2017   18:22:31   (  68.94, -97.75) 02/27/2017   18:23:41  (  68.83, -96.66)   45.27                70
 02/27/2017   19:13:03   ( -68.32,  70.39) 02/27/2017   19:13:18  ( -68.34,  70.38)    2.49                15
 02/27/2017   20:03:47   (  68.19,-122.14) 02/27/2017   20:02:45  (  68.22,-122.12)    3.14                62
 03/02/2017   10:39:15   (  68.44,  18.70) 03/02/2017   10:40:19  (  68.44,  18.74)    1.74                64
 03/02/2017   11:29:56   ( -68.30,-173.81) 03/02/2017   11:29:50  ( -68.30,-173.81)    0.67                 6
 03/02/2017   12:20:34   (  67.85,  -5.94) 03/02/2017   12:19:22  (  67.89,  -6.64)   29.68                72
 03/05/2017   02:56:07   (  68.37, 134.56) 03/05/2017   02:56:52  (  68.36, 134.51)    2.33                45
 03/05/2017   03:46:49   ( -68.29, -58.01) 03/05/2017   03:46:22  ( -68.27, -57.97)    2.19                27