Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 26.  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)
 03/26/2021   18:21:50   (  68.48, -97.11) 03/26/2021   18:22:28  (  68.47, -97.10)    0.97                38
 03/26/2021   19:12:31   ( -68.36,  70.37) 03/26/2021   19:11:58  ( -68.36,  70.40)    1.08                33
 03/29/2021   09:48:10   ( -69.14,-149.52) 03/29/2021   09:49:20  ( -69.01,-148.20)   54.49                70
 03/29/2021   10:38:44   (  68.47,  18.69) 03/29/2021   10:38:55  (  68.45,  18.76)    3.42                11
 03/29/2021   11:29:24   ( -68.29,-173.76) 03/29/2021   11:28:26  ( -68.29,-173.81)    2.00                58
 04/01/2021   02:04:53   ( -68.54, -32.93) 04/01/2021   02:05:55  ( -68.54, -32.90)    1.32                62
 04/01/2021   02:55:37   (  68.41, 134.55) 04/01/2021   02:55:22  (  68.42, 134.60)    3.02                15
 04/01/2021   03:46:10   ( -67.85, -57.43) 04/01/2021   03:44:59  ( -67.93, -58.35)   39.69                71
 04/03/2021   18:21:46   ( -68.47,  82.93) 04/03/2021   18:22:23  ( -68.45,  82.87)    3.09                37
 04/03/2021   19:12:30   (  68.34,-109.60) 04/03/2021   19:11:50  (  68.33,-109.62)    1.63                40
 04/06/2021   09:48:03   (  68.87,  30.86) 04/06/2021   09:49:14  (  68.79,  31.54)   28.93                71
 04/06/2021   10:38:39   ( -68.47,-161.29) 04/06/2021   10:38:48  ( -68.47,-161.22)    2.85                 9
 04/06/2021   11:29:22   (  68.29,   6.25) 04/06/2021   11:28:16  (  68.29,   6.21)    1.86                66