Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 11.  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)
 07/13/2017   19:12:47   (  68.38,-109.59) 07/13/2017   19:13:30  (  68.37,-109.55)    2.02                43
 07/13/2017   20:03:28   ( -68.25,  57.91) 07/13/2017   20:03:00  ( -68.27,  57.96)    3.42                28
 07/16/2017   10:39:13   ( -69.33,-162.41) 07/16/2017   10:40:20  ( -69.25,-160.21)   86.61                67
 07/16/2017   11:29:40   (  68.30,   6.29) 07/16/2017   11:30:02  (  68.30,   6.24)    2.09                22
 07/16/2017   12:20:22   ( -68.22, 173.72) 07/16/2017   12:19:32  ( -68.21, 173.76)    1.85                50
 07/19/2017   02:55:53   ( -68.56, -45.57) 07/19/2017   02:57:04  ( -68.52, -45.27)   12.79                71
 07/19/2017   03:46:34   (  68.28, 122.10) 07/19/2017   03:46:33  (  68.29, 122.10)    1.12                 1
 07/19/2017   04:37:15   ( -68.13, -70.40) 07/19/2017   04:36:04  ( -68.14, -70.45)    2.30                71
 07/21/2017   19:12:43   ( -68.37,  70.45) 07/21/2017   19:13:36  ( -68.40,  70.45)    3.03                53
 07/21/2017   20:03:27   (  68.26,-122.10) 07/21/2017   20:03:03  (  68.27,-122.05)    2.36                24
 07/21/2017   20:53:55   ( -67.41,  46.27) 07/21/2017   20:52:46  ( -67.45,  44.63)   70.14                69
 07/24/2017   11:29:37   ( -68.34,-173.74) 07/24/2017   11:30:08  ( -68.32,-173.77)    2.75                31
 07/24/2017   12:20:20   (  68.18,  -6.22) 07/24/2017   12:19:35  (  68.19,  -6.27)    2.41                45