Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2019 1 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)
 01/14/2019   02:56:27   ( -68.33, -45.47) 01/14/2019   02:56:59  ( -68.35, -45.43)    2.68                32
 01/14/2019   03:47:11   (  68.21, 121.99) 01/14/2019   03:46:27  (  68.19, 122.02)    2.84                44
 01/16/2019   18:22:45   (  68.72, -97.53) 01/16/2019   18:23:55  (  68.64, -96.84)   29.53                70
 01/16/2019   19:13:21   ( -68.31,  70.33) 01/16/2019   19:13:29  ( -68.31,  70.39)    2.29                 8
 01/16/2019   20:04:04   (  68.14,-122.14) 01/16/2019   20:02:57  (  68.14,-122.16)    0.81                67
 01/19/2019   10:39:33   (  68.38,  18.69) 01/19/2019   10:40:29  (  68.38,  18.72)    1.44                56
 01/19/2019   11:30:14   ( -68.24,-173.80) 01/19/2019   11:30:00  ( -68.22,-173.84)    2.52                14
 01/19/2019   12:20:46   (  67.47,  -5.55) 01/19/2019   12:19:37  (  67.54,  -6.97)   60.97                69
 01/22/2019   02:56:26   (  68.32, 134.55) 01/22/2019   02:57:00  (  68.30, 134.51)    2.57                34
 01/22/2019   03:47:08   ( -68.22, -58.01) 01/22/2019   03:46:30  ( -68.20, -57.99)    2.47                38
 01/24/2019   18:22:45   ( -68.95,  82.18) 01/24/2019   18:23:55  ( -68.79,  83.34)   49.45                70
 01/24/2019   19:13:19   (  68.30,-109.66) 01/24/2019   19:13:29  (  68.29,-109.63)    1.78                10
 01/24/2019   20:04:00   ( -68.15,  57.85) 01/24/2019   20:03:00  ( -68.13,  57.81)    2.49                60