Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 7 16.  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   ( -68.56, -45.57) 07/19/2017   02:57:03  ( -68.51, -45.29)   12.48                71
 07/19/2017   03:46:33   (  68.27, 122.11) 07/19/2017   03:46:32  (  68.29, 122.09)    1.81                 1
 07/19/2017   04:37:15   ( -68.19, -70.47) 07/19/2017   04:36:02  ( -68.18, -70.41)    2.56                73
 07/21/2017   19:12:43   ( -68.37,  70.45) 07/21/2017   19:13:36  ( -68.37,  70.42)    1.42                53
 07/21/2017   20:03:27   (  68.25,-122.09) 07/21/2017   20:03:03  (  68.26,-122.08)    1.03                24
 07/21/2017   20:53:55   ( -67.41,  46.27) 07/21/2017   20:52:46  ( -67.43,  44.60)   71.23                69
 07/24/2017   10:39:14   (  69.46,  17.42) 07/24/2017   10:40:20  (  69.39,  19.94)   98.74                66
 07/24/2017   11:29:37   ( -68.35,-173.74) 07/24/2017   11:30:07  ( -68.34,-173.75)    0.65                30
 07/24/2017   12:20:21   (  68.24,  -6.29) 07/24/2017   12:19:34  (  68.23,  -6.24)    2.19                47
 07/27/2017   02:55:54   (  68.70, 134.26) 07/27/2017   02:57:04  (  68.63, 134.84)   24.69                70
 07/27/2017   03:46:31   ( -68.33, -57.94) 07/27/2017   03:46:38  ( -68.30, -57.92)    2.77                 7
 07/27/2017   04:37:14   (  68.16, 109.58) 07/27/2017   04:36:05  (  68.18, 109.58)    2.20                69
 07/29/2017   19:12:42   (  68.41,-109.59) 07/29/2017   19:13:37  (  68.41,-109.55)    1.66                55
 07/29/2017   20:03:23   ( -68.25,  57.93) 07/29/2017   20:03:08  ( -68.26,  57.89)    1.42                15
 07/29/2017   20:53:55   (  67.50,-133.83) 07/29/2017   20:52:46  (  67.52,-135.31)   63.11                69