Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 6 18.  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)
 06/19/2020   19:12:37   (  68.35,-109.59) 06/19/2020   19:13:15  (  68.33,-109.55)    3.29                38
 06/19/2020   20:03:18   ( -68.22,  57.90) 06/19/2020   20:02:45  ( -68.22,  57.95)    2.22                33
 06/22/2020   10:38:59   ( -69.10,-162.13) 06/22/2020   10:40:07  ( -69.01,-160.48)   66.40                68
 06/22/2020   11:29:30   (  68.28,   6.28) 06/22/2020   11:29:45  (  68.28,   6.27)    0.73                15
 06/22/2020   12:20:11   ( -68.15, 173.77) 06/22/2020   12:19:15  ( -68.18, 173.78)    3.24                56
 06/25/2020   02:55:40   ( -68.39, -45.39) 06/25/2020   02:56:47  ( -68.40, -45.35)    2.00                67
 06/25/2020   03:46:23   (  68.21, 122.14) 06/25/2020   03:46:15  (  68.22, 122.08)    2.68                 8
 06/25/2020   04:37:00   ( -67.92, -70.16) 06/25/2020   04:35:47  ( -67.96, -70.60)   18.82                73
 06/27/2020   19:12:32   ( -68.32,  70.47) 06/27/2020   19:13:16  ( -68.35,  70.46)    2.87                44
 06/27/2020   20:03:16   (  68.20,-122.06) 06/27/2020   20:02:43  (  68.22,-122.04)    2.68                33
 06/30/2020   10:38:57   (  69.09,  17.90) 06/30/2020   10:40:05  (  68.99,  19.51)   65.12                68
 06/30/2020   11:29:26   ( -68.31,-173.73) 06/30/2020   11:29:46  ( -68.29,-173.73)    1.91                20
 06/30/2020   12:20:10   (  68.19,  -6.27) 06/30/2020   12:19:13  (  68.16,  -6.23)    3.27                57