Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 6.  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)
 04/06/2021   09:48:06   (  68.98,  30.70) 04/06/2021   09:49:16  (  68.90,  31.66)   39.65                70
 04/06/2021   10:38:39   ( -68.43,-161.25) 04/06/2021   10:38:52  ( -68.45,-161.26)    2.12                13
 04/06/2021   11:29:23   (  68.29,   6.24) 04/06/2021   11:28:20  (  68.29,   6.19)    2.26                63
 04/09/2021   02:04:51   (  68.55, 147.05) 04/09/2021   02:05:49  (  68.55, 147.10)    1.83                58
 04/09/2021   02:55:32   ( -68.43, -45.46) 04/09/2021   02:55:19  ( -68.44, -45.40)    2.63                13
 04/09/2021   03:46:06   (  67.75, 122.70) 04/09/2021   03:44:56  (  67.76, 121.45)   52.47                70
 04/11/2021   18:21:44   (  68.50, -97.10) 04/11/2021   18:22:17  (  68.52, -97.06)    3.32                33
 04/11/2021   19:12:25   ( -68.37,  70.39) 04/11/2021   19:11:48  ( -68.36,  70.38)    0.78                37
 04/14/2021   09:48:02   ( -69.05,-149.37) 04/14/2021   09:49:12  ( -68.94,-148.30)   44.21                70
 04/14/2021   10:38:37   (  68.44,  18.75) 04/14/2021   10:38:46  (  68.44,  18.72)    1.43                 9
 04/14/2021   11:29:18   ( -68.31,-173.76) 04/14/2021   11:28:16  ( -68.34,-173.77)    3.10                62
 04/17/2021   02:04:47   ( -68.57, -32.94) 04/17/2021   02:05:46  ( -68.58, -32.88)    3.19                59
 04/17/2021   02:55:30   (  68.39, 134.60) 04/17/2021   02:55:14  (  68.40, 134.56)    2.44                16
 04/17/2021   03:46:03   ( -67.82, -57.37) 04/17/2021   03:44:52  ( -67.86, -58.45)   45.81                71
 04/19/2021   18:21:39   ( -68.51,  82.91) 04/19/2021   18:22:14  ( -68.49,  82.89)    2.36                35
 04/19/2021   19:12:23   (  68.39,-109.63) 04/19/2021   19:11:41  (  68.37,-109.61)    2.83                42