Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 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)
 12/10/2019   18:22:17   ( -68.63,  82.71) 12/10/2019   18:23:29  ( -68.54,  83.05)   17.15                72
 12/10/2019   19:12:58   (  68.34,-109.61) 12/10/2019   19:12:58  (  68.32,-109.57)    2.45                 0
 12/10/2019   20:03:39   ( -68.21,  57.88) 12/10/2019   20:02:28  ( -68.21,  57.93)    2.19                71
 12/13/2019   10:39:07   ( -68.44,-161.27) 12/13/2019   10:40:00  ( -68.42,-161.21)    2.97                53
 12/13/2019   11:29:50   (  68.26,   6.27) 12/13/2019   11:29:28  (  68.26,   6.23)    1.61                22
 12/13/2019   12:20:19   ( -67.48, 174.55) 12/13/2019   12:19:09  ( -67.54, 173.03)   65.20                70
 12/16/2019   02:55:59   ( -68.36, -45.39) 12/16/2019   02:56:30  ( -68.36, -45.41)    0.99                31
 12/16/2019   03:46:43   (  68.24, 122.08) 12/16/2019   03:45:57  (  68.24, 122.10)    1.22                46
 12/18/2019   18:22:14   (  68.69, -97.37) 12/18/2019   18:23:25  (  68.61, -96.85)   22.62                71
 12/18/2019   19:12:51   ( -68.33,  70.42) 12/18/2019   19:12:58  ( -68.34,  70.45)    1.76                 7
 12/18/2019   20:03:34   (  68.16,-122.05) 12/18/2019   20:02:26  (  68.17,-122.11)    2.53                68
 12/21/2019   10:39:02   (  68.40,  18.79) 12/21/2019   10:39:57  (  68.43,  18.80)    2.92                55
 12/21/2019   11:29:43   ( -68.26,-173.71) 12/21/2019   11:29:28  ( -68.27,-173.75)    2.54                15
 12/21/2019   12:20:15   (  67.49,  -5.45) 12/21/2019   12:19:06  (  67.54,  -6.96)   64.20                69