Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2020 12 10.  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)
 12/10/2020   04:36:48   (  67.16, 110.76) 12/10/2020   04:35:41  (  67.23, 108.55)   95.56                67
 12/12/2020   18:22:05   ( -69.39,  81.74) 12/12/2020   18:23:12  ( -69.31,  84.00)   88.86                67
 12/12/2020   19:12:32   (  68.35,-109.54) 12/12/2020   19:12:54  (  68.37,-109.54)    1.82                22
 12/12/2020   20:03:13   ( -68.22,  57.94) 12/12/2020   20:02:25  ( -68.20,  57.89)    2.95                48
 12/15/2020   10:38:42   ( -68.54,-161.32) 12/15/2020   10:39:54  ( -68.49,-161.15)    8.71                72
 12/15/2020   11:29:24   (  68.31,   6.29) 12/15/2020   11:29:22  (  68.32,   6.29)    1.49                 2
 12/15/2020   12:20:05   ( -68.17, 173.78) 12/15/2020   12:18:53  ( -68.16, 173.73)    2.88                72
 12/18/2020   02:55:32   ( -68.39, -45.34) 12/18/2020   02:56:23  ( -68.38, -45.40)    2.40                51
 12/18/2020   03:46:16   (  68.26, 122.12) 12/18/2020   03:45:50  (  68.26, 122.10)    0.73                26
 12/18/2020   04:36:42   ( -67.32, -69.40) 12/18/2020   04:35:34  ( -67.38, -71.28)   80.91                68
 12/20/2020   18:21:59   (  69.34, -98.18) 12/20/2020   18:23:06  (  69.26, -96.04)   84.41                67
 12/20/2020   19:12:25   ( -68.40,  70.42) 12/20/2020   19:12:50  ( -68.38,  70.48)    3.26                25
 12/20/2020   20:03:08   (  68.23,-122.05) 12/20/2020   20:02:18  (  68.20,-122.08)    2.94                50
 12/23/2020   10:38:35   (  68.51,  18.74) 12/23/2020   10:39:46  (  68.47,  18.84)    5.74                71
 12/23/2020   11:29:15   ( -68.31,-173.68) 12/23/2020   11:29:17  ( -68.31,-173.71)    1.57                 2
 12/23/2020   12:19:58   (  68.14,  -6.16) 12/23/2020   12:18:45  (  68.13,  -6.28)    5.02                73