Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 25.  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)
 07/27/2017   02:55:58   (  68.42, 134.59) 07/27/2017   02:57:08  (  68.41, 134.57)    0.78                70
 07/27/2017   03:46:40   ( -68.32, -57.97) 07/27/2017   03:46:38  ( -68.31, -57.92)    3.06                 2
 07/27/2017   04:37:20   (  67.99, 109.76) 07/27/2017   04:36:08  (  68.03, 109.40)   15.94                72
 07/29/2017   19:12:55   (  68.38,-109.60) 07/29/2017   19:13:39  (  68.38,-109.59)    0.46                44
 07/29/2017   20:03:36   ( -68.23,  57.91) 07/29/2017   20:03:10  ( -68.22,  57.85)    2.49                26
 08/01/2017   10:39:23   ( -69.26,-162.33) 08/01/2017   10:40:31  ( -69.13,-160.43)   76.73                68
 08/01/2017   11:29:51   (  68.35,   6.21) 08/01/2017   11:30:09  (  68.35,   6.24)    1.57                18
 08/01/2017   12:20:32   ( -68.19, 173.72) 08/01/2017   12:19:40  ( -68.19, 173.69)    1.29                52
 08/04/2017   02:56:04   ( -68.42, -45.44) 08/04/2017   02:57:13  ( -68.43, -45.43)    0.92                69
 08/04/2017   03:46:48   (  68.31, 122.01) 08/04/2017   03:46:40  (  68.31, 122.08)    2.68                 8
 08/04/2017   04:37:26   ( -67.99, -70.27) 08/04/2017   04:36:13  ( -68.05, -70.61)   15.28                73
 08/06/2017   19:13:01   ( -68.39,  70.37) 08/06/2017   19:13:44  ( -68.39,  70.40)    1.57                43
 08/06/2017   20:03:44   (  68.23,-122.12) 08/06/2017   20:03:12  (  68.22,-122.16)    1.95                32