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  ( -68.34,  70.45)    1.79                40
 02/14/2018   20:03:31   (  68.21,-122.11) 02/14/2018   20:02:54  (  68.22,-122.05)    3.07                37
 02/17/2018   10:39:09   (  69.00,  17.99) 02/17/2018   10:40:18  (  68.89,  19.38)   56.55                69
 02/17/2018   11:29:39   ( -68.28,-173.74) 02/17/2018   11:29:57  ( -68.30,-173.72)    1.46                18
 02/17/2018   12:20:23   (  68.15,  -6.26) 02/17/2018   12:19:24  (  68.17,  -6.23)    2.80                59
 02/20/2018   02:55:50   (  68.36, 134.63) 02/20/2018   02:56:57  (  68.34, 134.58)    2.73                67
 02/20/2018   03:46:31   ( -68.23, -57.88) 02/20/2018   03:46:27  ( -68.25, -57.90)    2.84                 4
 02/20/2018   04:37:10   (  67.82, 109.93) 02/20/2018   04:35:58  (  67.90, 109.33)   26.37                72
 02/22/2018   19:12:42   (  68.36,-109.59) 02/22/2018   19:13:25  (  68.35,-109.53)    2.28                43
 02/22/2018   20:03:23   ( -68.22,  57.90) 02/22/2018   20:02:56  ( -68.20,  57.92)    2.28                27
 02/25/2018   10:39:07   ( -69.33,-162.44) 02/25/2018   10:40:14  ( -69.21,-160.23)   88.38                67
 02/25/2018   11:29:34   (  68.30,   6.26) 02/25/2018   11:29:55  (  68.30,   6.29)    1.27                21
 02/25/2018   12:20:15   ( -68.17, 173.75) 02/25/2018   12:19:26  ( -68.16, 173.75)    1.09                49