Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2017 10 15.  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)
 10/17/2017   18:22:57   ( -68.47,  82.89) 10/17/2017   18:24:06  ( -68.49,  82.85)    3.00                69
 10/17/2017   19:13:42   (  68.39,-109.70) 10/17/2017   19:13:33  (  68.37,-109.64)    2.95                 9
 10/17/2017   20:04:19   ( -68.04,  58.06) 10/17/2017   20:03:06  ( -68.10,  57.66)   17.70                73
 10/20/2017   10:39:51   ( -68.45,-161.33) 10/20/2017   10:40:33  ( -68.44,-161.33)    1.84                42
 10/20/2017   11:30:35   (  68.32,   6.15) 10/20/2017   11:30:00  (  68.32,   6.18)    1.21                35
 10/23/2017   02:06:13   (  69.01, 146.38) 10/23/2017   02:07:23  (  68.93, 147.53)   46.78                70
 10/23/2017   02:56:45   ( -68.39, -45.48) 10/23/2017   02:57:01  ( -68.38, -45.52)    2.11                16
 10/23/2017   03:47:29   (  68.26, 121.99) 10/23/2017   03:46:28  (  68.26, 121.99)    0.30                61
 10/25/2017   18:22:58   (  68.46, -97.13) 10/25/2017   18:23:58  (  68.47, -97.16)    1.02                60
 10/25/2017   19:13:40   ( -68.38,  70.29) 10/25/2017   19:13:28  ( -68.36,  70.35)    3.03                12
 10/25/2017   20:04:14   (  67.71,-121.56) 10/25/2017   20:03:04  (  67.74,-122.73)   49.39                70
 10/28/2017   10:39:53   (  68.46,  18.64) 10/28/2017   10:40:25  (  68.45,  18.71)    3.28                32
 10/28/2017   11:30:33   ( -68.27,-173.80) 10/28/2017   11:29:56  ( -68.29,-173.85)    3.06                37