Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 5 22.  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   11:31:06  ( -68.45,-173.81)    8.33                71
 05/24/2018   12:20:37   (  68.23,  -6.40) 05/24/2018   12:20:35  (  68.23,  -6.43)    1.19                 2
 05/24/2018   13:11:18   ( -68.09, 161.09) 05/24/2018   13:10:05  ( -68.12, 161.08)    3.68                73
 05/27/2018   03:46:48   ( -68.34, -58.08) 05/27/2018   03:47:39  ( -68.31, -58.10)    3.36                51
 05/27/2018   04:37:32   (  68.22, 109.39) 05/27/2018   04:37:06  (  68.20, 109.41)    1.96                26
 05/27/2018   05:27:58   ( -67.27, -82.14) 05/27/2018   05:26:50  ( -67.31, -83.97)   79.06                68
 05/29/2018   19:13:18   (  69.33,-110.96) 05/29/2018   19:14:25  (  69.22,-108.73)   88.64                67
 05/29/2018   20:03:42   ( -68.28,  57.77) 05/29/2018   20:04:10  ( -68.28,  57.73)    1.84                28
 05/29/2018   20:54:26   (  68.15,-134.76) 05/29/2018   20:53:37  (  68.16,-134.76)    1.12                49
 06/01/2018   11:29:57   (  68.52,   5.92) 06/01/2018   11:31:08  (  68.45,   6.18)   12.98                71
 06/01/2018   12:20:36   ( -68.27, 173.56) 06/01/2018   12:20:40  ( -68.24, 173.56)    3.22                 4
 06/01/2018   13:11:20   (  68.15, -18.98) 06/01/2018   13:10:07  (  68.12, -18.94)    3.28                73
 06/04/2018   03:46:49   (  68.35, 121.91) 06/04/2018   03:47:40  (  68.35, 121.92)    0.91                51
 06/04/2018   04:37:30   ( -68.21, -70.59) 06/04/2018   04:37:11  ( -68.19, -70.62)    2.01                19
 06/04/2018   05:27:59   (  67.28,  97.86) 06/04/2018   05:26:51  (  67.34,  96.05)   78.13                68