Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 8 10.  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)
 08/12/2017   02:56:13   (  68.44, 134.52) 08/12/2017   02:57:14  (  68.44, 134.58)    2.64                61
 08/12/2017   03:46:54   ( -68.29, -57.97) 08/12/2017   03:46:45  ( -68.27, -57.99)    1.78                 9
 08/12/2017   04:37:30   (  67.74, 110.03) 08/12/2017   04:36:19  (  67.77, 109.07)   40.28                71
 08/14/2017   19:13:08   (  68.36,-109.62) 08/14/2017   19:13:44  (  68.36,-109.65)    1.22                36
 08/14/2017   20:03:50   ( -68.26,  57.83) 08/14/2017   20:03:14  ( -68.25,  57.86)    1.87                36
 08/17/2017   10:39:30   ( -68.92,-161.92) 08/17/2017   10:40:40  ( -68.81,-160.85)   44.44                70
 08/17/2017   11:30:05   (  68.33,   6.18) 08/17/2017   11:30:14  (  68.31,   6.18)    2.36                 9
 08/17/2017   12:20:46   ( -68.18, 173.69) 08/17/2017   12:19:44  ( -68.20, 173.68)    2.88                62
 08/20/2017   02:56:18   ( -68.42, -45.48) 08/20/2017   02:57:16  ( -68.42, -45.46)    0.95                58
 08/20/2017   03:47:01   (  68.26, 122.04) 08/20/2017   03:46:44  (  68.25, 121.99)    2.17                17
 08/20/2017   04:37:33   ( -67.62, -69.84) 08/20/2017   04:36:23  ( -67.65, -71.09)   52.77                70
 08/22/2017   19:13:14   ( -68.34,  70.39) 08/22/2017   19:13:46  ( -68.35,  70.34)    2.14                32
 08/22/2017   20:03:58   (  68.24,-122.17) 08/22/2017   20:03:13  (  68.24,-122.15)    0.71                45