Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 23.  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)
 05/24/2018   11:29:55   ( -68.46,-174.01) 05/24/2018   11:31:07  ( -68.40,-173.87)    8.54                72
 05/24/2018   12:20:37   (  68.22,  -6.40) 05/24/2018   12:20:35  (  68.24,  -6.42)    1.88                 2
 05/24/2018   13:11:18   ( -68.09, 161.09) 05/24/2018   13:10:06  ( -68.08, 161.02)    3.24                72
 05/27/2018   03:46:48   ( -68.34, -58.08) 05/27/2018   03:47:39  ( -68.33, -58.08)    1.10                51
 05/27/2018   04:37:32   (  68.21, 109.39) 05/27/2018   04:37:06  (  68.22, 109.43)    1.84                26
 05/27/2018   05:27:58   ( -67.27, -82.14) 05/27/2018   05:26:50  ( -67.33, -83.95)   78.29                68
 05/29/2018   19:13:19   (  69.38,-111.04) 05/29/2018   19:14:25  (  69.25,-108.69)   93.47                66
 05/29/2018   20:03:43   ( -68.33,  57.70) 05/29/2018   20:04:10  ( -68.31,  57.77)    3.44                27
 05/29/2018   20:54:26   (  68.15,-134.76) 05/29/2018   20:53:38  (  68.14,-134.79)    1.59                48
 06/01/2018   11:29:57   (  68.52,   5.91) 06/01/2018   11:31:09  (  68.45,   6.18)   13.13                72
 06/01/2018   12:20:36   ( -68.27, 173.55) 06/01/2018   12:20:41  ( -68.24, 173.56)    3.34                 5
 06/01/2018   13:11:20   (  68.15, -18.98) 06/01/2018   13:10:08  (  68.12, -18.94)    3.34                72
 06/04/2018   03:46:49   (  68.36, 121.90) 06/04/2018   03:47:41  (  68.38, 121.96)    3.34                52
 06/04/2018   04:37:30   ( -68.22, -70.60) 06/04/2018   04:37:12  ( -68.23, -70.59)    1.29                18
 06/04/2018   05:28:00   (  67.34,  97.79) 06/04/2018   05:26:52  (  67.38,  96.08)   73.37                68