Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 12 11.  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  ( -68.41,-161.23)    2.84                54
 12/13/2019   11:29:50   (  68.26,   6.27) 12/13/2019   11:29:28  (  68.25,   6.22)    2.34                22
 12/13/2019   12:20:18   ( -67.43, 174.62) 12/13/2019   12:19:09  ( -67.53, 173.02)   68.94                69
 12/16/2019   02:55:59   ( -68.36, -45.39) 12/16/2019   02:56:30  ( -68.34, -45.43)    2.86                31
 12/16/2019   03:46:43   (  68.24, 122.08) 12/16/2019   03:45:57  (  68.23, 122.08)    0.94                46
 12/18/2019   18:22:14   (  68.69, -97.37) 12/18/2019   18:23:25  (  68.59, -96.88)   22.68                71
 12/18/2019   19:12:51   ( -68.33,  70.42) 12/18/2019   19:12:58  ( -68.32,  70.42)    1.92                 7
 12/18/2019   20:03:35   (  68.21,-122.12) 12/18/2019   20:02:25  (  68.20,-122.07)    2.47                70
 12/21/2019   10:39:02   (  68.40,  18.79) 12/21/2019   10:39:57  (  68.39,  18.76)    1.68                55
 12/21/2019   11:29:44   ( -68.31,-173.77) 12/21/2019   11:29:27  ( -68.29,-173.73)    2.95                17
 12/21/2019   12:20:15   (  67.49,  -5.45) 12/21/2019   12:19:06  (  67.50,  -7.00)   65.97                69
 12/24/2019   02:55:55   (  68.38, 134.59) 12/24/2019   02:56:26  (  68.35, 134.60)    3.19                31
 12/24/2019   03:46:36   ( -68.23, -57.90) 12/24/2019   03:45:56  ( -68.25, -57.89)    2.13                40