Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 3 25.  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)
 03/26/2018   19:12:48   (  68.32,-109.58) 03/26/2018   19:13:44  (  68.33,-109.59)    1.22                56
 03/26/2018   20:03:29   ( -68.19,  57.91) 03/26/2018   20:03:15  ( -68.18,  57.85)    2.68                14
 03/26/2018   20:54:02   (  67.46,-133.89) 03/26/2018   20:52:52  (  67.50,-135.28)   59.34                70
 03/29/2018   11:29:44   (  68.32,   6.19) 03/29/2018   11:30:17  (  68.30,   6.23)    2.30                33
 03/29/2018   12:20:25   ( -68.18, 173.69) 03/29/2018   12:19:48  ( -68.15, 173.68)    3.19                37
 04/01/2018   02:56:05   ( -68.91, -46.14) 04/01/2018   02:57:15  ( -68.82, -44.90)   50.33                70
 04/01/2018   03:46:39   (  68.26, 122.04) 04/01/2018   03:46:50  (  68.26, 122.06)    1.07                11
 04/01/2018   04:37:20   ( -68.11, -70.46) 04/01/2018   04:36:21  ( -68.11, -70.50)    1.42                59
 04/03/2018   19:12:50   ( -68.32,  70.42) 04/03/2018   19:13:56  ( -68.34,  70.36)    3.25                66
 04/03/2018   20:03:34   (  68.20,-122.12) 04/03/2018   20:03:23  (  68.22,-122.13)    1.93                11
 04/03/2018   20:54:10   ( -67.78,  45.72) 04/03/2018   20:52:58  ( -67.84,  45.06)   28.37                72
 04/06/2018   11:29:45   ( -68.31,-173.81) 04/06/2018   11:30:28  ( -68.29,-173.83)    3.12                43
 04/06/2018   12:20:28   (  68.15,  -6.29) 04/06/2018   12:19:55  (  68.17,  -6.33)    2.56                33