Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 10 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)
 10/20/2021   15:00:36   (  68.94, -47.20) 10/20/2021   15:01:07  (  68.93, -47.14)    2.65                31
 10/20/2021   15:51:17   ( -68.80, 120.32) 10/20/2021   15:50:37  ( -68.82, 120.36)    3.36                40
 10/23/2021   06:26:52   ( -69.15, -99.04) 10/23/2021   06:28:03  ( -69.10, -98.69)   15.10                71
 10/23/2021   07:17:33   (  68.88,  68.65) 10/23/2021   07:17:32  (  68.88,  68.67)    0.78                 1
 10/23/2021   08:08:15   ( -68.78,-123.90) 10/23/2021   08:07:02  ( -68.77,-123.83)    3.20                73
 10/25/2021   22:43:47   ( -68.93,  17.03) 10/25/2021   22:44:31  ( -68.93,  16.98)    2.29                44
 10/25/2021   23:34:31   (  68.81,-175.50) 10/25/2021   23:33:58  (  68.81,-175.53)    1.16                33
 10/28/2021   14:10:11   (  69.39, -35.17) 10/28/2021   14:11:21  (  69.29, -34.30)   35.88                70
 10/28/2021   15:00:46   ( -68.92, 132.81) 10/28/2021   15:00:56  ( -68.91, 132.84)    1.61                10
 10/28/2021   15:51:30   (  68.80, -59.73) 10/28/2021   15:50:23  (  68.79, -59.67)    3.05                67
 10/31/2021   06:27:02   (  68.96,  81.19) 10/31/2021   06:27:51  (  68.99,  81.19)    3.45                49
 10/31/2021   07:17:44   ( -68.86,-111.35) 10/31/2021   07:17:22  ( -68.84,-111.37)    2.74                22
 10/31/2021   08:08:11   (  67.83,  57.29) 10/31/2021   08:07:04  (  67.87,  55.12)   90.97                67