Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 9 12.  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)
 09/13/2020   02:05:55   (  69.41, 145.82) 09/13/2020   02:07:01  (  69.33, 148.19)   93.33                66
 09/13/2020   02:56:19   ( -68.35, -45.43) 09/13/2020   02:56:47  ( -68.33, -45.44)    3.02                28
 09/13/2020   03:47:03   (  68.23, 122.03) 09/13/2020   03:46:14  (  68.22, 122.08)    2.16                49
 09/15/2020   18:22:34   (  68.50, -97.17) 09/15/2020   18:23:45  (  68.48, -97.02)    6.53                71
 09/15/2020   19:13:14   ( -68.30,  70.41) 09/15/2020   19:13:16  ( -68.31,  70.41)    1.31                 2
 09/15/2020   20:03:57   (  68.13,-122.06) 09/15/2020   20:02:44  (  68.14,-122.14)    3.80                73
 09/18/2020   10:39:28   (  68.39,  18.74) 09/18/2020   10:40:15  (  68.39,  18.76)    0.82                47
 09/18/2020   11:30:09   ( -68.24,-173.74) 09/18/2020   11:29:46  ( -68.23,-173.80)    2.56                23
 09/18/2020   12:20:36   (  67.21,  -5.17) 09/18/2020   12:19:29  (  67.22,  -7.31)   92.06                67
 09/21/2020   02:05:55   ( -69.36, -34.11) 09/21/2020   02:07:02  ( -69.25, -31.92)   86.89                67
 09/21/2020   02:56:22   (  68.34, 134.58) 09/21/2020   02:56:43  (  68.36, 134.61)    2.60                21
 09/21/2020   03:47:03   ( -68.19, -57.91) 09/21/2020   03:46:14  ( -68.20, -57.95)    2.53                49
 09/23/2020   18:22:34   ( -68.45,  82.90) 09/23/2020   18:23:45  ( -68.45,  82.95)    2.27                71
 09/23/2020   19:13:17   (  68.29,-109.59) 09/23/2020   19:13:13  (  68.27,-109.62)    2.55                 4
 09/23/2020   20:03:57   ( -68.08,  58.00) 09/23/2020   20:02:44  ( -68.12,  57.83)    7.93                73