Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 24.  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)
 03/24/2021   03:46:16   (  67.91, 122.48) 03/24/2021   03:45:04  (  67.99, 121.72)   32.54                72
 03/26/2021   18:21:50   (  68.48, -97.10) 03/26/2021   18:22:28  (  68.47, -97.10)    0.67                38
 03/26/2021   19:12:31   ( -68.36,  70.38) 03/26/2021   19:11:58  ( -68.37,  70.40)    1.55                33
 03/29/2021   09:48:10   ( -69.13,-149.52) 03/29/2021   09:49:20  ( -69.01,-148.19)   54.30                70
 03/29/2021   10:38:44   (  68.47,  18.69) 03/29/2021   10:38:55  (  68.45,  18.76)    3.28                11
 03/29/2021   11:29:24   ( -68.29,-173.76) 03/29/2021   11:28:26  ( -68.29,-173.80)    2.03                58
 04/01/2021   02:04:53   ( -68.54, -32.93) 04/01/2021   02:05:55  ( -68.54, -32.90)    1.71                62
 04/01/2021   02:55:37   (  68.41, 134.55) 04/01/2021   02:55:22  (  68.42, 134.61)    3.27                15
 04/01/2021   03:46:10   ( -67.84, -57.42) 04/01/2021   03:44:59  ( -67.93, -58.34)   39.77                71
 04/03/2021   18:21:46   ( -68.47,  82.93) 04/03/2021   18:22:23  ( -68.46,  82.88)    2.47                37
 04/03/2021   19:12:30   (  68.35,-109.60) 04/03/2021   19:11:50  (  68.34,-109.62)    1.33                40
 04/06/2021   09:48:03   (  68.87,  30.85) 04/06/2021   09:49:14  (  68.80,  31.55)   29.26                71
 04/06/2021   10:38:38   ( -68.41,-161.22) 04/06/2021   10:38:49  ( -68.42,-161.28)    2.66                11
 04/06/2021   11:29:22   (  68.29,   6.25) 04/06/2021   11:28:16  (  68.30,   6.22)    1.60                66