Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 10 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)
 10/04/2021   15:00:24   (  68.94, -47.16) 10/04/2021   15:01:29  (  68.94, -47.13)    1.08                65
 10/04/2021   15:51:05   ( -68.79, 120.36) 10/04/2021   15:51:00  ( -68.77, 120.29)    3.42                 5
 10/04/2021   16:41:43   (  68.35, -71.75) 10/04/2021   16:40:31  (  68.44, -72.48)   31.01                72
 10/07/2021   07:17:18   (  68.89,  68.67) 10/07/2021   07:17:55  (  68.87,  68.66)    2.98                37
 10/07/2021   08:07:59   ( -68.75,-123.81) 10/07/2021   08:07:25  ( -68.76,-123.84)    2.07                34
 10/09/2021   22:43:37   ( -69.39,  16.44) 10/09/2021   22:44:48  ( -69.29,  17.44)   40.53                71
 10/09/2021   23:34:13   (  68.85,-175.50) 10/09/2021   23:34:21  (  68.85,-175.49)    1.07                 8
 10/10/2021   00:24:55   ( -68.76,  -8.05) 10/10/2021   00:23:51  ( -68.74,  -7.99)    3.12                64
 10/12/2021   15:00:24   ( -68.92, 132.87) 10/12/2021   15:01:20  ( -68.94, 132.86)    1.43                56
 10/12/2021   15:51:08   (  68.82, -59.68) 10/12/2021   15:50:47  (  68.82, -59.65)    1.31                21
 10/12/2021   16:41:37   ( -68.02, 108.68) 10/12/2021   16:40:28  ( -68.10, 107.12)   65.25                69
 10/15/2021   06:26:55   (  69.95,  79.85) 10/15/2021   06:28:01  (  69.83,  82.29)   94.31                66
 10/15/2021   07:17:19   ( -68.89,-111.31) 10/15/2021   07:17:46  ( -68.90,-111.30)    1.95                27
 10/15/2021   08:08:03   (  68.78,  56.14) 10/15/2021   08:07:13  (  68.78,  56.19)    1.99                50
 10/17/2021   22:43:31   (  68.96,-162.95) 10/17/2021   22:44:41  (  68.96,-162.98)    1.11                70
 10/17/2021   23:34:13   ( -68.85,   4.51) 10/17/2021   23:34:11  ( -68.86,   4.53)    1.56                 2
 10/18/2021   00:24:53   (  68.53, 172.24) 10/18/2021   00:23:40  (  68.63, 171.88)   17.86                73