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   (  68.56, 146.95) 09/11/2019   02:07:04  (  68.54, 147.15)    8.33                71
 09/11/2019   02:56:33   ( -68.36, -45.47) 09/11/2019   02:56:35  ( -68.37, -45.42)    2.27                 2
 09/11/2019   03:47:16   (  68.19, 122.06) 09/11/2019   03:46:03  (  68.21, 122.03)    2.71                73
 09/13/2019   18:22:46   (  68.44, -97.12) 09/13/2019   18:23:34  (  68.42, -97.12)    3.12                48
 09/13/2019   19:13:27   ( -68.30,  70.39) 09/13/2019   19:13:04  ( -68.31,  70.38)    0.89                23
 09/13/2019   20:03:54   (  67.26,-121.03) 09/13/2019   20:02:47  (  67.30,-123.13)   90.23                67
 09/16/2019   09:49:13   ( -69.40,-149.97) 09/16/2019   09:50:20  ( -69.34,-147.71)   88.64                67
 09/16/2019   10:39:39   (  68.39,  18.73) 09/16/2019   10:40:01  (  68.40,  18.74)    1.66                22
 09/16/2019   11:30:20   ( -68.24,-173.76) 09/16/2019   11:29:32  ( -68.24,-173.82)    2.45                48
 09/19/2019   02:05:50   ( -68.49, -32.94) 09/19/2019   02:07:02  ( -68.50, -32.91)    1.66                72
 09/19/2019   02:56:33   (  68.33, 134.58) 09/19/2019   02:56:30  (  68.32, 134.53)    1.84                 3
 09/19/2019   03:47:14   ( -68.18, -57.91) 09/19/2019   03:46:01  ( -68.16, -58.02)    4.90                73
 09/21/2019   18:22:44   ( -68.43,  82.91) 09/21/2019   18:23:31  ( -68.42,  82.89)    1.76                47
 09/21/2019   19:13:28   (  68.33,-109.65) 09/21/2019   19:12:58  (  68.30,-109.61)    3.29                30
 09/21/2019   20:03:51   ( -67.20,  59.05) 09/21/2019   20:02:44  ( -67.31,  56.88)   94.22                67