Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 9 4.  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)
 09/05/2021   07:17:13   (  69.18,  68.28) 09/05/2021   07:18:24  (  69.07,  68.95)   28.78                71
 09/05/2021   08:07:48   ( -68.72,-123.77) 09/05/2021   08:07:58  ( -68.74,-123.84)    3.45                10
 09/05/2021   08:58:33   (  68.65,  43.64) 09/05/2021   08:57:25  (  68.63,  43.67)    2.54                68
 09/07/2021   23:34:03   (  68.84,-175.48) 09/07/2021   23:34:55  (  68.84,-175.47)    0.81                52
 09/08/2021   00:24:44   ( -68.70,  -7.97) 09/08/2021   00:24:26  ( -68.68,  -8.04)    3.16                18
 09/08/2021   01:15:14   (  67.82, 160.46) 09/08/2021   01:14:06  (  67.84, 158.61)   77.92                68
 09/10/2021   15:00:33   ( -69.89, 131.48) 09/10/2021   15:01:39  ( -69.83, 134.07)   99.38                66
 09/10/2021   15:50:58   (  68.77, -59.61) 09/10/2021   15:51:23  (  68.78, -59.67)    2.59                25
 09/10/2021   16:41:40   ( -68.67, 107.83) 09/10/2021   16:40:53  ( -68.67, 107.83)    0.30                47
 09/13/2021   07:17:10   ( -68.92,-111.36) 09/13/2021   07:18:22  ( -68.88,-111.31)    4.37                72
 09/13/2021   08:07:53   (  68.75,  56.18) 09/13/2021   08:07:49  (  68.76,  56.19)    1.40                 4
 09/13/2021   08:58:33   ( -68.55,-136.24) 09/13/2021   08:57:21  ( -68.55,-136.44)    8.22                72
 09/15/2021   23:34:05   ( -68.85,   4.51) 09/15/2021   23:34:49  ( -68.87,   4.55)    2.85                44
 09/16/2021   00:24:48   (  68.69, 172.03) 09/16/2021   00:24:17  (  68.69, 171.97)    2.49                31