Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 10 20.  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)
 10/20/2018   19:13:34   (  68.46,-109.75) 10/20/2018   19:14:09  (  68.45,-109.69)    2.73                35
 10/20/2018   20:04:14   ( -68.28,  57.80) 10/20/2018   20:03:40  ( -68.29,  57.75)    2.31                34
 10/23/2018   10:39:52   ( -68.99,-161.99) 10/23/2018   10:41:03  ( -68.89,-160.91)   44.69                71
 10/23/2018   11:30:27   (  68.38,   6.13) 10/23/2018   11:30:37  (  68.38,   6.11)    1.19                10
 10/23/2018   12:21:08   ( -68.25, 173.62) 10/23/2018   12:20:07  ( -68.28, 173.62)    3.30                61
 10/26/2018   02:56:37   ( -68.48, -45.54) 10/26/2018   02:57:37  ( -68.48, -45.53)    0.73                60
 10/26/2018   03:47:21   (  68.34, 121.94) 10/26/2018   03:47:04  (  68.36, 121.97)    2.27                17
 10/26/2018   04:37:53   ( -67.73, -69.97) 10/26/2018   04:36:42  ( -67.81, -71.04)   45.93                71
 10/28/2018   19:13:30   ( -68.45,  70.27) 10/28/2018   19:14:03  ( -68.46,  70.33)    2.83                33
 10/28/2018   20:04:13   (  68.26,-122.19) 10/28/2018   20:03:31  (  68.28,-122.24)    3.00                42
 10/31/2018   10:39:46   (  68.71,  18.37) 10/31/2018   10:40:58  (  68.64,  18.80)   19.46                72
 10/31/2018   11:30:23   ( -68.36,-173.86) 10/31/2018   11:30:31  ( -68.38,-173.89)    1.90                 8
 10/31/2018   12:21:07   (  68.24,  -6.39) 10/31/2018   12:19:58  (  68.25,  -6.40)    1.20                69
 11/03/2018   02:56:36   (  68.48, 134.45) 11/03/2018   02:57:27  (  68.49, 134.50)    2.55                51