Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 6 9.  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)
 06/09/2018   11:29:59   ( -68.70,-174.32) 06/09/2018   11:31:11  ( -68.59,-173.66)   29.30                72
 06/09/2018   12:20:37   (  68.24,  -6.41) 06/09/2018   12:20:42  (  68.26,  -6.42)    1.63                 5
 06/09/2018   13:11:18   ( -68.12, 161.07) 06/09/2018   13:10:13  ( -68.10, 161.02)    3.12                65
 06/12/2018   03:46:46   ( -68.33, -58.05) 06/12/2018   03:47:45  ( -68.33, -58.11)    2.44                59
 06/12/2018   04:37:30   (  68.19, 109.43) 06/12/2018   04:37:12  (  68.21, 109.40)    2.35                18
 06/12/2018   05:28:01   ( -67.53, -82.43) 06/12/2018   05:26:51  ( -67.61, -83.67)   53.42                70
 06/14/2018   20:03:41   ( -68.33,  57.72) 06/14/2018   20:04:15  ( -68.34,  57.78)    2.51                34
 06/14/2018   20:54:24   (  68.15,-134.73) 06/14/2018   20:53:43  (  68.16,-134.78)    2.94                41
 06/17/2018   11:30:00   (  68.74,   5.64) 06/17/2018   11:31:11  (  68.67,   6.42)   32.51                71
 06/17/2018   12:20:35   ( -68.29, 173.56) 06/17/2018   12:20:46  ( -68.29, 173.60)    2.08                11
 06/17/2018   13:11:18   (  68.10, -18.90) 06/17/2018   13:10:14  (  68.12, -18.97)    3.34                64
 06/20/2018   03:46:48   (  68.37, 121.90) 06/20/2018   03:47:47  (  68.34, 121.90)    3.32                59
 06/20/2018   04:37:29   ( -68.24, -70.61) 06/20/2018   04:37:17  ( -68.25, -70.58)    1.78                12
 06/20/2018   05:28:03   (  67.57,  97.53) 06/20/2018   05:26:53  (  67.62,  96.34)   50.98                70
 06/22/2018   20:03:41   (  68.33,-122.27) 06/22/2018   20:04:16  (  68.35,-122.22)    3.25                35
 06/22/2018   20:54:22   ( -68.19,  45.22) 06/22/2018   20:53:47  ( -68.21,  45.24)    1.45                35