Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 8 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)
 08/10/2019   03:47:15   (  68.21, 122.01) 08/10/2019   03:46:14  (  68.23, 122.05)    3.35                61
 08/12/2019   18:22:44   (  68.44, -97.15) 08/12/2019   18:23:45  (  68.42, -97.12)    2.65                61
 08/12/2019   19:13:25   ( -68.31,  70.35) 08/12/2019   19:13:15  ( -68.31,  70.38)    1.30                10
 08/12/2019   20:04:00   (  67.69,-121.58) 08/12/2019   20:02:50  (  67.75,-122.63)   44.84                70
 08/15/2019   10:39:38   (  68.36,  18.73) 08/15/2019   10:40:14  (  68.39,  18.71)    2.44                36
 08/15/2019   11:30:20   ( -68.28,-173.84) 08/15/2019   11:29:44  ( -68.28,-173.78)    2.43                36
 08/18/2019   02:05:59   ( -68.99, -33.65) 08/18/2019   02:07:09  ( -68.84, -32.49)   49.31                70
 08/18/2019   02:56:33   (  68.34, 134.53) 08/18/2019   02:56:43  (  68.34, 134.54)    0.62                10
 08/18/2019   03:47:14   ( -68.19, -57.97) 08/18/2019   03:46:14  ( -68.18, -58.02)    2.75                60
 08/20/2019   18:22:44   ( -68.43,  82.88) 08/20/2019   18:23:45  ( -68.41,  82.86)    2.64                61
 08/20/2019   19:13:28   (  68.32,-109.67) 08/20/2019   19:13:12  (  68.29,-109.63)    2.99                16
 08/20/2019   20:04:01   ( -67.74,  58.38) 08/20/2019   20:02:50  ( -67.74,  57.36)   43.08                71
 08/23/2019   10:39:38   ( -68.41,-161.32) 08/23/2019   10:40:12  ( -68.41,-161.26)    2.71                34
 08/23/2019   11:30:21   (  68.24,   6.20) 08/23/2019   11:29:40  (  68.24,   6.18)    0.80                41