Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 9 11.  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, 145.81) 09/13/2020   02:07:01  (  69.33, 148.18)   93.29                66
 09/13/2020   02:56:19   ( -68.35, -45.43) 09/13/2020   02:56:46  ( -68.38, -45.38)    3.35                27
 09/13/2020   03:47:03   (  68.24, 122.03) 09/13/2020   03:46:14  (  68.22, 122.07)    2.63                49
 09/15/2020   18:22:34   (  68.50, -97.17) 09/15/2020   18:23:45  (  68.46, -97.03)    6.85                71
 09/15/2020   19:13:14   ( -68.30,  70.41) 09/15/2020   19:13:16  ( -68.30,  70.40)    0.45                 2
 09/15/2020   20:03:57   (  68.13,-122.06) 09/15/2020   20:02:44  (  68.13,-122.15)    3.66                73
 09/18/2020   10:39:28   (  68.39,  18.74) 09/18/2020   10:40:15  (  68.37,  18.74)    2.09                47
 09/18/2020   11:30:09   ( -68.24,-173.74) 09/18/2020   11:29:45  ( -68.27,-173.75)    3.08                24
 09/18/2020   12:20:35   (  67.15,  -5.11) 09/18/2020   12:19:29  (  67.20,  -7.33)   95.85                66
 09/21/2020   02:05:55   ( -69.36, -34.11) 09/21/2020   02:07:02  ( -69.23, -31.95)   85.99                67
 09/21/2020   02:56:22   (  68.34, 134.58) 09/21/2020   02:56:43  (  68.33, 134.58)    0.91                21
 09/21/2020   03:47:04   ( -68.24, -57.97) 09/21/2020   03:46:13  ( -68.23, -57.91)    2.61                51
 09/23/2020   18:22:33   ( -68.40,  82.97) 09/23/2020   18:23:45  ( -68.41,  82.90)    2.98                72
 09/23/2020   19:13:17   (  68.29,-109.59) 09/23/2020   19:13:12  (  68.29,-109.60)    0.72                 5
 09/23/2020   20:03:57   ( -68.08,  58.00) 09/23/2020   20:02:43  ( -68.13,  57.85)    8.58                74