Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 9 10.  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)
 09/11/2019   02:05:53   (  68.57, 146.94) 09/11/2019   02:07:04  (  68.53, 147.14)    9.34                71
 09/11/2019   02:56:33   ( -68.37, -45.49) 09/11/2019   02:56:35  ( -68.36, -45.44)    2.72                 2
 09/11/2019   03:47:16   (  68.20, 122.04) 09/11/2019   03:46:03  (  68.20, 122.01)    1.22                73
 09/13/2019   18:22:45   (  68.40, -97.07) 09/13/2019   18:23:34  (  68.41, -97.13)    2.55                49
 09/13/2019   19:13:27   ( -68.31,  70.37) 09/13/2019   19:13:04  ( -68.30,  70.37)    1.68                23
 09/13/2019   20:03:54   (  67.27,-121.05) 09/13/2019   20:02:47  (  67.29,-123.14)   89.96                67
 09/16/2019   09:49:13   ( -69.42,-149.99) 09/16/2019   09:50:20  ( -69.34,-147.72)   89.27                67
 09/16/2019   10:39:40   (  68.40,  18.71) 09/16/2019   10:40:02  (  68.40,  18.74)    1.09                22
 09/16/2019   11:30:21   ( -68.25,-173.78) 09/16/2019   11:29:33  ( -68.23,-173.83)    2.74                48
 09/19/2019   02:05:50   ( -68.51, -32.96) 09/19/2019   02:07:02  ( -68.50, -32.90)    2.54                72
 09/19/2019   02:56:33   (  68.34, 134.56) 09/19/2019   02:56:30  (  68.33, 134.54)    1.71                 3
 09/19/2019   03:47:14   ( -68.19, -57.93) 09/19/2019   03:46:00  ( -68.22, -57.96)    3.93                74
 09/21/2019   18:22:44   ( -68.45,  82.89) 09/21/2019   18:23:31  ( -68.43,  82.90)    1.73                47
 09/21/2019   19:13:27   (  68.29,-109.59) 09/21/2019   19:12:58  (  68.32,-109.60)    3.18                29
 09/21/2019   20:03:52   ( -67.27,  58.97) 09/21/2019   20:02:44  ( -67.32,  56.89)   89.55                68
 09/24/2019   09:49:10   (  69.25,  30.26) 09/24/2019   09:50:18  (  69.13,  32.03)   70.80                68
 09/24/2019   10:39:38   ( -68.39,-161.27) 09/24/2019   10:40:00  ( -68.37,-161.30)    3.26                22
 09/24/2019   11:30:21   (  68.23,   6.25) 09/24/2019   11:29:27  (  68.24,   6.20)    2.33                54