Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 12.  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)
 02/14/2018   19:12:47   ( -68.34,  70.41) 02/14/2018   19:13:27  ( -68.36,  70.47)    3.16                40
 02/14/2018   20:03:31   (  68.20,-122.10) 02/14/2018   20:02:55  (  68.18,-122.09)    2.12                36
 02/17/2018   10:39:09   (  68.99,  18.00) 02/17/2018   10:40:18  (  68.93,  19.42)   57.16                69
 02/17/2018   11:29:39   ( -68.28,-173.73) 02/17/2018   11:29:58  ( -68.28,-173.75)    1.03                19
 02/17/2018   12:20:23   (  68.14,  -6.25) 02/17/2018   12:19:25  (  68.15,  -6.25)    0.99                58
 02/20/2018   02:55:50   (  68.35, 134.64) 02/20/2018   02:56:58  (  68.35, 134.58)    2.49                68
 02/20/2018   03:46:32   ( -68.27, -57.94) 02/20/2018   03:46:28  ( -68.26, -57.90)    2.70                 4
 02/20/2018   04:37:11   (  67.87, 109.87) 02/20/2018   04:35:59  (  67.91, 109.34)   22.68                72
 02/22/2018   19:12:42   (  68.35,-109.58) 02/22/2018   19:13:27  (  68.34,-109.56)    1.39                45
 02/22/2018   20:03:23   ( -68.22,  57.91) 02/22/2018   20:02:58  ( -68.19,  57.90)    2.95                25
 02/22/2018   20:53:48   (  67.06,-133.38) 02/22/2018   20:52:42  (  67.11,-135.68)   99.97                66
 02/25/2018   10:39:09   ( -69.43,-162.58) 02/25/2018   10:40:15  ( -69.29,-160.13)   97.35                66
 02/25/2018   11:29:34   (  68.29,   6.27) 02/25/2018   11:29:58  (  68.28,   6.25)    2.07                24
 02/25/2018   12:20:15   ( -68.16, 173.76) 02/25/2018   12:19:28  ( -68.19, 173.77)    3.17                47