Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 21.  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)
 12/21/2019   10:39:03   (  68.43,  18.75) 12/21/2019   10:39:59  (  68.42,  18.78)    1.85                56
 12/21/2019   11:29:44   ( -68.30,-173.76) 12/21/2019   11:29:29  ( -68.30,-173.72)    1.68                15
 12/21/2019   12:20:16   (  67.52,  -5.49) 12/21/2019   12:19:07  (  67.59,  -6.91)   60.85                69
 12/24/2019   02:55:54   (  68.36, 134.62) 12/24/2019   02:56:28  (  68.37, 134.60)    1.03                34
 12/24/2019   03:46:36   ( -68.28, -57.96) 12/24/2019   03:45:58  ( -68.25, -57.91)    3.34                38
 12/26/2019   18:22:13   ( -69.00,  82.24) 12/26/2019   18:23:23  ( -68.86,  83.44)   50.59                70
 12/26/2019   19:12:47   (  68.35,-109.59) 12/26/2019   19:12:57  (  68.37,-109.52)    3.49                10
 12/26/2019   20:03:28   ( -68.20,  57.91) 12/26/2019   20:02:28  ( -68.20,  57.91)    0.62                60
 12/29/2019   10:38:55   ( -68.39,-161.18) 12/29/2019   10:40:00  ( -68.41,-161.23)    3.01                65
 12/29/2019   11:29:39   (  68.28,   6.27) 12/29/2019   11:29:27  (  68.30,   6.28)    2.86                12
 12/29/2019   12:20:14   ( -67.81, 174.18) 12/29/2019   12:19:02  ( -67.92, 173.46)   32.37                72
 01/01/2020   02:55:48   ( -68.38, -45.39) 01/01/2020   02:56:30  ( -68.35, -45.42)    3.10                42
 01/01/2020   03:46:31   (  68.22, 122.13) 01/01/2020   03:45:57  (  68.24, 122.09)    3.32                34
 01/03/2020   18:22:10   (  69.11, -97.91) 01/03/2020   18:23:18  (  69.01, -96.36)   62.73                68
 01/03/2020   19:12:40   ( -68.37,  70.40) 01/03/2020   19:12:58  ( -68.35,  70.45)    3.12                18
 01/03/2020   20:03:23   (  68.21,-122.08) 01/03/2020   20:02:25  (  68.23,-122.04)    3.14                58