Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 2 22.  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)
 02/22/2018   19:12:42   (  68.33,-109.56) 02/22/2018   19:13:25  (  68.33,-109.56)    0.26                43
 02/22/2018   20:03:23   ( -68.21,  57.92) 02/22/2018   20:02:55  ( -68.22,  57.94)    1.20                28
 02/25/2018   10:39:06   ( -69.27,-162.35) 02/25/2018   10:40:13  ( -69.18,-160.25)   83.27                67
 02/25/2018   11:29:34   (  68.28,   6.29) 02/25/2018   11:29:54  (  68.30,   6.28)    1.80                20
 02/25/2018   12:20:15   ( -68.16, 173.76) 02/25/2018   12:19:25  ( -68.13, 173.72)    3.23                50
 02/28/2018   02:55:43   ( -68.42, -45.42) 02/28/2018   02:56:55  ( -68.42, -45.33)    3.64                72
 02/28/2018   03:46:26   (  68.23, 122.13) 02/28/2018   03:46:23  (  68.25, 122.11)    2.01                 3
 02/28/2018   04:37:07   ( -68.11, -70.39) 02/28/2018   04:35:54  ( -68.09, -70.45)    2.95                73
 03/02/2018   19:12:34   ( -68.37,  70.42) 03/02/2018   19:13:23  ( -68.36,  70.48)    2.66                49
 03/02/2018   20:03:17   (  68.19,-122.04) 03/02/2018   20:02:51  (  68.19,-122.08)    1.75                26
 03/02/2018   20:53:43   ( -67.25,  46.43) 03/02/2018   20:52:35  ( -67.30,  44.54)   81.32                68
 03/05/2018   10:39:01   (  69.32,  17.60) 03/05/2018   10:40:08  (  69.17,  19.75)   86.13                67
 03/05/2018   11:29:25   ( -68.27,-173.67) 03/05/2018   11:29:52  ( -68.29,-173.72)    2.87                27
 03/05/2018   12:20:09   (  68.15,  -6.20) 03/05/2018   12:19:19  (  68.17,  -6.22)    2.54                50
 03/08/2018   02:55:38   (  68.48, 134.53) 03/08/2018   02:56:48  (  68.47, 134.75)    9.15                70
 03/08/2018   03:46:18   ( -68.28, -57.90) 03/08/2018   03:46:20  ( -68.26, -57.87)    3.00                 2
 03/08/2018   04:37:00   (  68.06, 109.69) 03/08/2018   04:35:48  (  68.08, 109.56)    6.10                72