Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 6 4.  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)
 06/04/2018   05:28:00   (  67.31,  97.82) 06/04/2018   05:26:52  (  67.33,  96.03)   76.86                68
 06/06/2018   20:03:43   (  68.32,-122.29) 06/06/2018   20:04:10  (  68.32,-122.22)    2.58                27
 06/06/2018   20:54:23   ( -68.14,  45.27) 06/06/2018   20:53:41  ( -68.16,  45.22)    2.95                42
 06/09/2018   11:29:58   ( -68.67,-174.27) 06/09/2018   11:31:10  ( -68.58,-173.68)   26.16                72
 06/09/2018   12:20:37   (  68.27,  -6.44) 06/09/2018   12:20:41  (  68.24,  -6.44)    3.18                 4
 06/09/2018   13:11:18   ( -68.14, 161.04) 06/09/2018   13:10:11  ( -68.14, 161.07)    1.26                67
 06/12/2018   03:46:47   ( -68.35, -58.08) 06/12/2018   03:47:44  ( -68.33, -58.11)    3.30                57
 06/12/2018   04:37:31   (  68.22, 109.39) 06/12/2018   04:37:11  (  68.21, 109.39)    1.99                20
 06/12/2018   05:28:01   ( -67.50, -82.39) 06/12/2018   05:26:51  ( -67.55, -83.73)   57.48                70
 06/14/2018   20:03:41   ( -68.30,  57.76) 06/14/2018   20:04:13  ( -68.33,  57.77)    2.91                32
 06/14/2018   20:54:25   (  68.18,-134.77) 06/14/2018   20:53:41  (  68.15,-134.80)    3.08                44
 06/17/2018   11:29:57   (  68.61,   5.81) 06/17/2018   11:31:09  (  68.52,   6.25)   20.41                72
 06/17/2018   12:20:34   ( -68.26, 173.59) 06/17/2018   12:20:42  ( -68.26, 173.57)    0.88                 8
 06/17/2018   13:11:18   (  68.13, -18.94) 06/17/2018   13:10:09  (  68.14, -18.93)    0.41                69