Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 7 24.  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)
 07/24/2018   20:03:42   (  68.36,-122.27) 07/24/2018   20:04:15  (  68.37,-122.21)    2.78                33
 07/24/2018   20:54:23   ( -68.22,  45.22) 07/24/2018   20:53:46  ( -68.20,  45.23)    2.30                37
 07/27/2018   11:30:02   ( -68.85,-174.46) 07/27/2018   11:31:12  ( -68.74,-173.51)   40.02                70
 07/27/2018   12:20:38   (  68.29,  -6.42) 07/27/2018   12:20:45  (  68.30,  -6.41)    0.78                 7
 07/27/2018   13:11:19   ( -68.15, 161.07) 07/27/2018   13:10:16  ( -68.14, 161.03)    2.63                63
 07/30/2018   03:46:50   ( -68.41, -58.11) 07/30/2018   03:47:46  ( -68.40, -58.05)    2.44                56
 07/30/2018   04:37:33   (  68.23, 109.43) 07/30/2018   04:37:14  (  68.23, 109.39)    1.68                19
 07/30/2018   05:28:04   ( -67.55, -82.41) 07/30/2018   05:26:54  ( -67.57, -83.74)   56.67                70
 08/01/2018   20:03:46   ( -68.34,  57.74) 08/01/2018   20:04:16  ( -68.34,  57.75)    0.49                30
 08/01/2018   20:54:30   (  68.22,-134.80) 08/01/2018   20:53:43  (  68.22,-134.75)    2.05                47
 08/04/2018   11:30:03   (  68.53,   5.94) 08/04/2018   11:31:14  (  68.48,   6.17)   11.06                71
 08/04/2018   12:20:42   ( -68.27, 173.59) 08/04/2018   12:20:46  ( -68.27, 173.55)    1.68                 4
 08/04/2018   13:11:26   (  68.16, -18.95) 08/04/2018   13:10:13  (  68.15, -18.95)    0.81                73
 08/07/2018   03:46:57   (  68.37, 121.92) 08/07/2018   03:47:45  (  68.36, 121.91)    0.73                48
 08/07/2018   04:37:39   ( -68.26, -70.63) 08/07/2018   04:37:15  ( -68.26, -70.58)    2.10                24
 08/07/2018   05:28:05   (  67.18,  98.01) 08/07/2018   05:26:58  (  67.25,  95.90)   90.98                67