Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 12 6.  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)
 12/07/2021   13:19:47   (  70.07, -23.40) 12/07/2021   13:20:53  (  69.96, -21.09)   88.60                66
 12/07/2021   14:10:12   ( -69.09, 145.34) 12/07/2021   14:10:37  ( -69.06, 145.35)    3.46                25
 12/07/2021   15:00:56   (  68.96, -47.17) 12/07/2021   15:00:04  (  68.96, -47.14)    1.55                52
 12/10/2021   05:36:22   (  69.16,  93.71) 12/10/2021   05:37:32  (  69.16,  93.72)    0.43                70
 12/10/2021   06:27:03   ( -69.03, -98.79) 12/10/2021   06:27:02  ( -69.04, -98.79)    1.71                 1
 12/10/2021   07:17:44   (  68.74,  68.91) 12/10/2021   07:16:31  (  68.82,  68.58)   16.23                73
 12/12/2021   21:53:13   (  69.10,-150.43) 12/12/2021   21:53:57  (  69.13,-150.43)    3.17                44
 12/12/2021   22:43:55   ( -69.02,  17.00) 12/12/2021   22:43:27  ( -69.02,  17.06)    2.30                28
 12/15/2021   13:19:34   ( -69.96, 156.81) 12/15/2021   13:20:42  ( -69.87, 158.79)   76.58                68
 12/15/2021   14:10:04   (  69.10, -34.64) 12/15/2021   14:10:21  (  69.09, -34.60)    1.92                17
 12/15/2021   15:00:45   ( -68.96, 132.86) 12/15/2021   14:59:51  ( -68.98, 132.90)    2.86                54
 12/18/2021   05:36:11   ( -69.16, -86.26) 12/18/2021   05:37:19  ( -69.16, -86.26)    0.39                68
 12/18/2021   06:26:55   (  69.04,  81.21) 12/18/2021   06:26:46  (  69.04,  81.23)    0.68                 9
 12/18/2021   07:17:32   ( -68.69,-110.99) 12/18/2021   07:16:19  ( -68.77,-111.48)   21.66                73