Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 8 30.  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)
 08/31/2018   02:56:47   (  69.46, 133.08) 08/31/2018   02:57:53  (  69.37, 135.55)   97.06                66
 08/31/2018   03:47:10   ( -68.35, -58.09) 08/31/2018   03:47:39  ( -68.36, -58.09)    0.73                29
 08/31/2018   04:37:54   (  68.23, 109.37) 08/31/2018   04:37:06  (  68.26, 109.43)    3.51                48
 09/02/2018   19:13:26   (  68.51,-109.85) 09/02/2018   19:14:37  (  68.48,-109.70)    7.21                71
 09/02/2018   20:04:06   ( -68.31,  57.73) 09/02/2018   20:04:08  ( -68.31,  57.73)    0.29                 2
 09/02/2018   20:54:49   (  68.14,-134.74) 09/02/2018   20:53:36  (  68.15,-134.82)    3.27                73
 09/05/2018   11:30:20   (  68.37,   6.11) 09/05/2018   11:31:07  (  68.36,   6.04)    2.65                47
 09/05/2018   12:21:02   ( -68.27, 173.55) 09/05/2018   12:20:37  ( -68.25, 173.54)    2.14                25
 09/05/2018   13:11:27   (  67.13, -17.74) 09/05/2018   13:10:21  (  67.19, -20.02)   98.63                66
 09/08/2018   02:56:48   ( -69.29, -46.69) 09/08/2018   02:57:55  ( -69.18, -44.69)   79.58                67
 09/08/2018   03:47:16   (  68.33, 121.92) 09/08/2018   03:47:35  (  68.35, 121.91)    2.27                19
 09/08/2018   04:37:58   ( -68.23, -70.63) 09/08/2018   04:37:05  ( -68.24, -70.59)    2.10                53
 09/10/2018   19:13:28   ( -68.46,  70.22) 09/10/2018   19:14:35  ( -68.44,  70.26)    2.46                67
 09/10/2018   20:04:11   (  68.30,-122.27) 09/10/2018   20:04:03  (  68.28,-122.29)    2.58                 8
 09/10/2018   20:54:48   ( -67.93,  45.52) 09/10/2018   20:53:36  ( -68.00,  45.01)   22.87                72