Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 9 19.  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   ( -69.42, -34.20) 09/21/2020   02:07:02  ( -69.31, -31.85)   92.95                66
 09/21/2020   02:56:22   (  68.34, 134.58) 09/21/2020   02:56:44  (  68.37, 134.61)    3.29                22
 09/21/2020   03:47:03   ( -68.20, -57.92) 09/21/2020   03:46:15  ( -68.21, -57.95)    1.62                48
 09/23/2020   18:22:35   ( -68.52,  82.81) 09/23/2020   18:23:47  ( -68.48,  82.98)    7.81                72
 09/23/2020   19:13:17   (  68.30,-109.59) 09/23/2020   19:13:15  (  68.31,-109.58)    1.72                 2
 09/23/2020   20:03:58   ( -68.15,  57.92) 09/23/2020   20:02:46  ( -68.15,  57.86)    2.47                72
 09/26/2020   10:39:29   ( -68.42,-161.28) 09/26/2020   10:40:19  ( -68.40,-161.25)    2.19                50
 09/26/2020   11:30:12   (  68.25,   6.24) 09/26/2020   11:29:47  (  68.23,   6.19)    3.46                25
 09/26/2020   12:20:39   ( -67.34, 174.68) 09/26/2020   12:19:30  ( -67.40, 172.87)   77.40                69
 09/29/2020   02:05:59   (  69.38, 145.86) 09/29/2020   02:07:06  (  69.28, 148.09)   88.47                67
 09/29/2020   02:56:24   ( -68.37, -45.45) 09/29/2020   02:56:51  ( -68.35, -45.44)    2.34                27
 09/29/2020   03:47:07   (  68.20, 122.07) 09/29/2020   03:46:18  (  68.23, 122.06)    2.45                49
 10/01/2020   18:22:39   (  68.59, -97.28) 10/01/2020   18:23:50  (  68.53, -96.99)   13.74                71
 10/01/2020   19:13:18   ( -68.32,  70.38) 10/01/2020   19:13:22  ( -68.33,  70.40)    0.83                 4
 10/01/2020   20:04:01   (  68.16,-122.10) 10/01/2020   20:02:50  (  68.15,-122.17)    3.25                71