Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 9 20.  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)
 09/21/2020   02:05:56   ( -69.38, -34.14) 09/21/2020   02:07:03  ( -69.30, -31.86)   90.08                67
 09/21/2020   02:56:23   (  68.36, 134.56) 09/21/2020   02:56:45  (  68.36, 134.60)    1.99                22
 09/21/2020   03:47:04   ( -68.21, -57.94) 09/21/2020   03:46:16  ( -68.20, -57.96)    1.99                48
 09/23/2020   18:22:35   ( -68.53,  82.79) 09/23/2020   18:23:47  ( -68.49,  82.99)    9.13                72
 09/23/2020   19:13:17   (  68.31,-109.61) 09/23/2020   19:13:15  (  68.32,-109.57)    2.30                 2
 09/23/2020   20:03:58   ( -68.16,  57.90) 09/23/2020   20:02:46  ( -68.16,  57.87)    1.14                72
 09/26/2020   10:39:28   ( -68.38,-161.23) 09/26/2020   10:40:20  ( -68.39,-161.27)    2.00                52
 09/26/2020   11:30:12   (  68.26,   6.22) 09/26/2020   11:29:47  (  68.27,   6.24)    1.10                25
 09/26/2020   12:20:39   ( -67.36, 174.66) 09/26/2020   12:19:31  ( -67.39, 172.85)   77.25                68
 09/29/2020   02:06:00   (  69.44, 145.77) 09/29/2020   02:07:06  (  69.36, 148.20)   95.71                66
 09/29/2020   02:56:24   ( -68.38, -45.47) 09/29/2020   02:56:52  ( -68.38, -45.41)    2.21                28
 09/29/2020   03:47:07   (  68.22, 122.05) 09/29/2020   03:46:20  (  68.20, 122.02)    2.02                47
 10/01/2020   18:22:41   (  68.65, -97.37) 10/01/2020   18:23:53  (  68.56, -96.96)   19.64                72
 10/01/2020   19:13:19   ( -68.34,  70.36) 10/01/2020   19:13:25  ( -68.35,  70.42)    3.07                 6
 10/01/2020   20:04:02   (  68.17,-122.12) 10/01/2020   20:02:53  (  68.18,-122.14)    1.05                69