Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 10 9.  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)
 10/10/2018   02:56:38   ( -68.51, -45.55) 10/10/2018   02:57:50  ( -68.49, -45.53)    2.95                72
 10/10/2018   03:47:22   (  68.39, 121.93) 10/10/2018   03:47:17  (  68.37, 121.97)    2.64                 5
 10/10/2018   04:38:01   ( -68.15, -70.45) 10/10/2018   04:36:49  ( -68.16, -70.65)    8.61                72
 10/12/2018   19:13:29   ( -68.44,  70.32) 10/12/2018   19:14:17  ( -68.43,  70.28)    1.72                48
 10/12/2018   20:04:13   (  68.32,-122.21) 10/12/2018   20:03:44  (  68.31,-122.22)    0.92                29
 10/12/2018   20:54:37   ( -67.27,  46.39) 10/12/2018   20:53:30  ( -67.32,  44.28)   91.12                67
 10/15/2018   10:39:54   (  69.28,  17.64) 10/15/2018   10:41:02  (  69.19,  19.49)   73.63                68
 10/15/2018   11:30:21   ( -68.39,-173.85) 10/15/2018   11:30:45  ( -68.37,-173.90)    3.21                24
 10/15/2018   12:21:05   (  68.27,  -6.38) 10/15/2018   12:20:12  (  68.25,  -6.41)    2.93                53
 10/18/2018   02:56:32   (  68.50, 134.47) 10/18/2018   02:57:41  (  68.51, 134.52)    2.23                69
 10/18/2018   03:47:13   ( -68.37, -58.03) 10/18/2018   03:47:12  ( -68.37, -58.03)    0.19                 1
 10/18/2018   04:37:54   (  68.08, 109.64) 10/18/2018   04:36:41  (  68.12, 109.33)   13.47                73
 10/20/2018   19:13:23   (  68.44,-109.67) 10/20/2018   19:14:09  (  68.44,-109.68)    0.59                46
 10/20/2018   20:04:04   ( -68.30,  57.82) 10/20/2018   20:03:40  ( -68.29,  57.77)    2.33                24
 10/20/2018   20:54:30   (  67.21,-133.53) 10/20/2018   20:53:23  (  67.26,-135.76)   96.23                67