Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 10 7.  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)
 10/07/2021   07:17:18   (  68.90,  68.66) 10/07/2021   07:17:54  (  68.92,  68.72)    2.96                36
 10/07/2021   08:07:59   ( -68.75,-123.82) 10/07/2021   08:07:25  ( -68.75,-123.86)    1.52                34
 10/09/2021   22:43:37   ( -69.40,  16.43) 10/09/2021   22:44:48  ( -69.28,  17.42)   41.15                71
 10/09/2021   23:34:13   (  68.86,-175.51) 10/09/2021   23:34:21  (  68.84,-175.50)    2.48                 8
 10/10/2021   00:24:54   ( -68.71,  -7.99) 10/10/2021   00:23:51  ( -68.73,  -8.00)    1.95                63
 10/12/2021   15:00:24   ( -68.94, 132.85) 10/12/2021   15:01:20  ( -68.93, 132.84)    1.16                56
 10/12/2021   15:51:08   (  68.82, -59.69) 10/12/2021   15:50:47  (  68.81, -59.66)    2.23                21
 10/12/2021   16:41:37   ( -68.03, 108.66) 10/12/2021   16:40:28  ( -68.09, 107.11)   64.97                69
 10/15/2021   06:26:55   (  69.96,  79.84) 10/15/2021   06:28:01  (  69.83,  82.28)   94.63                66
 10/15/2021   07:17:19   ( -68.90,-111.33) 10/15/2021   07:17:46  ( -68.89,-111.32)    1.12                27
 10/15/2021   08:08:03   (  68.79,  56.13) 10/15/2021   08:07:13  (  68.77,  56.18)    3.09                50
 10/17/2021   22:43:31   (  68.97,-162.97) 10/17/2021   22:44:41  (  68.95,-162.99)    2.65                70
 10/17/2021   23:34:13   ( -68.87,   4.49) 10/17/2021   23:34:11  ( -68.85,   4.51)    2.35                 2
 10/18/2021   00:24:53   (  68.55, 172.23) 10/18/2021   00:23:40  (  68.61, 171.87)   16.42                73
 10/20/2021   15:00:26   (  68.95, -47.16) 10/20/2021   15:01:06  (  68.95, -47.11)    2.27                40
 10/20/2021   15:51:07   ( -68.79, 120.37) 10/20/2021   15:50:37  ( -68.80, 120.33)    2.14                30