Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 12.  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)
 12/13/2019   10:39:06   ( -68.39,-161.20) 12/13/2019   10:40:00  ( -68.42,-161.22)    3.21                54
 12/13/2019   11:29:50   (  68.26,   6.27) 12/13/2019   11:29:28  (  68.26,   6.23)    1.52                22
 12/13/2019   12:20:19   ( -67.48, 174.55) 12/13/2019   12:19:09  ( -67.53, 173.02)   65.15                70
 12/16/2019   02:55:59   ( -68.36, -45.39) 12/16/2019   02:56:30  ( -68.36, -45.41)    0.71                31
 12/16/2019   03:46:43   (  68.24, 122.07) 12/16/2019   03:45:57  (  68.25, 122.11)    2.13                46
 12/18/2019   18:22:14   (  68.69, -97.37) 12/18/2019   18:23:25  (  68.63, -96.83)   22.76                71
 12/18/2019   19:12:51   ( -68.33,  70.42) 12/18/2019   19:12:58  ( -68.36,  70.47)    3.34                 7
 12/18/2019   20:03:35   (  68.21,-122.12) 12/18/2019   20:02:26  (  68.19,-122.08)    2.97                69
 12/21/2019   10:39:02   (  68.40,  18.79) 12/21/2019   10:39:58  (  68.41,  18.78)    0.83                56
 12/21/2019   11:29:44   ( -68.31,-173.78) 12/21/2019   11:29:28  ( -68.30,-173.72)    2.57                16
 12/21/2019   12:20:15   (  67.49,  -5.45) 12/21/2019   12:19:06  (  67.57,  -6.92)   63.07                69
 12/24/2019   02:55:55   (  68.38, 134.59) 12/24/2019   02:56:27  (  68.40, 134.65)    3.68                32
 12/24/2019   03:46:36   ( -68.23, -57.90) 12/24/2019   03:45:58  ( -68.24, -57.90)    1.30                38