Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 17.  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)
 07/19/2017   02:55:52   ( -68.55, -45.56) 07/19/2017   02:57:03  ( -68.53, -45.27)   11.94                71
 07/19/2017   03:46:34   (  68.32, 122.05) 07/19/2017   03:46:32  (  68.30, 122.11)    2.74                 2
 07/19/2017   04:37:14   ( -68.13, -70.39) 07/19/2017   04:36:03  ( -68.14, -70.45)    3.31                71
 07/21/2017   19:12:44   ( -68.42,  70.39) 07/21/2017   19:13:36  ( -68.40,  70.45)    2.89                52
 07/21/2017   20:03:27   (  68.24,-122.08) 07/21/2017   20:03:04  (  68.23,-122.11)    1.77                23
 07/21/2017   20:53:55   ( -67.40,  46.28) 07/21/2017   20:52:46  ( -67.46,  44.63)   70.62                69
 07/24/2017   11:29:37   ( -68.34,-173.73) 07/24/2017   11:30:08  ( -68.33,-173.76)    1.58                31
 07/24/2017   12:20:21   (  68.23,  -6.28) 07/24/2017   12:19:35  (  68.22,  -6.26)    1.37                46
 07/27/2017   02:55:54   (  68.69, 134.27) 07/27/2017   02:57:06  (  68.58, 134.78)   23.71                72
 07/27/2017   03:46:31   ( -68.32, -57.93) 07/27/2017   03:46:39  ( -68.32, -57.91)    0.89                 8
 07/27/2017   04:37:14   (  68.16, 109.59) 07/27/2017   04:36:07  (  68.14, 109.53)    2.71                67
 07/29/2017   19:12:42   (  68.40,-109.58) 07/29/2017   19:13:39  (  68.40,-109.57)    0.73                57
 07/29/2017   20:03:23   ( -68.25,  57.94) 07/29/2017   20:03:10  ( -68.25,  57.88)    2.56                13
 07/29/2017   20:53:56   (  67.55,-133.88) 07/29/2017   20:52:46  (  67.62,-135.20)   56.48                70