Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 4 28.  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)
 04/30/2018   11:29:52   (  68.34,   6.13) 04/30/2018   11:30:50  (  68.32,   6.11)    2.52                58
 04/30/2018   12:20:33   ( -68.19, 173.64) 04/30/2018   12:20:20  ( -68.21, 173.62)    2.32                13
 04/30/2018   13:11:07   (  67.54, -18.24) 04/30/2018   13:09:57  (  67.55, -19.51)   54.03                70
 05/03/2018   03:46:47   (  68.31, 121.94) 05/03/2018   03:47:22  (  68.29, 121.94)    2.48                35
 05/03/2018   04:37:28   ( -68.16, -70.55) 05/03/2018   04:36:52  ( -68.18, -70.55)    2.63                36
 05/05/2018   19:13:09   ( -68.98,  69.52) 05/05/2018   19:14:18  ( -68.87,  70.88)   55.81                69
 05/05/2018   20:03:42   (  68.28,-122.25) 05/05/2018   20:03:54  (  68.25,-122.23)    3.12                12
 05/05/2018   20:54:23   ( -68.13,  45.26) 05/05/2018   20:53:24  ( -68.15,  45.28)    2.69                59
 05/08/2018   11:29:53   ( -68.36,-173.89) 05/08/2018   11:30:58  ( -68.39,-173.85)    3.37                65
 05/08/2018   12:20:36   (  68.20,  -6.37) 05/08/2018   12:20:26  (  68.22,  -6.40)    2.36                10
 05/08/2018   13:11:13   ( -67.83, 161.41) 05/08/2018   13:10:00  ( -67.89, 160.85)   24.58                73
 05/11/2018   03:46:47   ( -68.33, -58.08) 05/11/2018   03:47:29  ( -68.35, -58.02)    3.07                42
 05/11/2018   04:37:30   (  68.17, 109.43) 05/11/2018   04:36:57  (  68.18, 109.42)    0.74                33