Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 12 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)
 12/20/2021   21:53:02   ( -69.12,  29.57) 12/20/2021   21:53:46  ( -69.13,  29.57)    1.37                44
 12/20/2021   22:43:46   (  68.99,-162.94) 12/20/2021   22:43:14  (  68.97,-163.00)    3.36                32
 12/23/2021   13:19:24   (  69.84, -23.00) 12/23/2021   13:20:33  (  69.71, -21.42)   62.21                69
 12/23/2021   14:09:54   ( -69.12, 145.35) 12/23/2021   14:10:12  ( -69.10, 145.40)    3.21                18
 12/23/2021   15:00:37   (  68.94, -47.09) 12/23/2021   14:59:40  (  68.93, -47.16)    3.00                57
 12/26/2021   05:36:03   (  69.16,  93.77) 12/26/2021   05:37:08  (  69.17,  93.74)    1.78                65
 12/26/2021   06:26:45   ( -69.07, -98.80) 12/26/2021   06:26:38  ( -69.06, -98.77)    2.04                 7
 12/26/2021   07:17:22   (  68.58,  69.18) 12/26/2021   07:16:11  (  68.61,  68.31)   35.33                71
 12/28/2021   21:52:53   (  69.11,-150.39) 12/28/2021   21:53:33  (  69.11,-150.45)    2.49                40
 12/28/2021   22:43:35   ( -69.03,  17.04) 12/28/2021   22:43:03  ( -69.01,  17.05)    2.20                32
 12/31/2021   13:19:13   ( -69.88, 156.98) 12/31/2021   13:20:21  ( -69.78, 158.66)   65.30                68
 12/31/2021   14:09:45   (  69.13, -34.63) 12/31/2021   14:09:58  (  69.10, -34.58)    3.05                13
 12/31/2021   15:00:26   ( -68.98, 132.89) 12/31/2021   14:59:28  ( -69.00, 132.92)    2.45                58