Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 10 18.  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   15:00:35   (  68.91, -47.16) 10/20/2021   15:01:07  (  68.91, -47.17)    0.65                32
 10/20/2021   15:51:17   ( -68.82, 120.29) 10/20/2021   15:50:37  ( -68.80, 120.33)    2.61                40
 10/23/2021   06:26:52   ( -69.12, -98.99) 10/23/2021   06:28:04  ( -69.08, -98.72)   12.09                72
 10/23/2021   07:17:33   (  68.85,  68.70) 10/23/2021   07:17:33  (  68.85,  68.64)    2.21                 0
 10/23/2021   08:08:15   ( -68.75,-123.86) 10/23/2021   08:07:03  ( -68.74,-123.86)    0.72                72
 10/25/2021   22:43:48   ( -68.95,  17.00) 10/25/2021   22:44:31  ( -68.96,  17.02)    0.99                43
 10/25/2021   23:34:31   (  68.84,-175.53) 10/25/2021   23:33:57  (  68.84,-175.49)    1.68                34
 10/28/2021   14:10:10   (  69.36, -35.13) 10/28/2021   14:11:21  (  69.27, -34.34)   32.81                71
 10/28/2021   15:00:45   ( -68.89, 132.85) 10/28/2021   15:00:56  ( -68.89, 132.81)    1.60                11
 10/28/2021   15:51:29   (  68.77, -59.69) 10/28/2021   15:50:23  (  68.76, -59.70)    1.11                66
 10/31/2021   06:27:02   (  68.98,  81.16) 10/31/2021   06:27:51  (  68.96,  81.16)    2.06                49
 10/31/2021   07:17:44   ( -68.88,-111.38) 10/31/2021   07:17:21  ( -68.86,-111.33)    2.58                23
 10/31/2021   08:08:10   (  67.80,  57.33) 10/31/2021   08:07:04  (  67.84,  55.09)   94.12                66