Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 22.  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   02:04:57   (  68.50, 147.09) 03/24/2021   02:06:02  (  68.48, 147.03)    3.30                65
 03/24/2021   02:55:38   ( -68.38, -45.42) 03/24/2021   02:55:32  ( -68.37, -45.47)    1.78                 6
 03/24/2021   03:46:16   (  67.92, 122.47) 03/24/2021   03:45:04  (  67.98, 121.72)   32.15                72
 03/26/2021   18:21:50   (  68.49, -97.11) 03/26/2021   18:22:28  (  68.47, -97.11)    2.27                38
 03/26/2021   19:12:31   ( -68.36,  70.38) 03/26/2021   19:11:58  ( -68.36,  70.40)    0.98                33
 03/29/2021   09:48:10   ( -69.14,-149.52) 03/29/2021   09:49:20  ( -69.01,-148.20)   54.43                70
 03/29/2021   10:38:43   (  68.42,  18.75) 03/29/2021   10:38:55  (  68.44,  18.75)    2.81                12
 03/29/2021   11:29:24   ( -68.29,-173.76) 03/29/2021   11:28:26  ( -68.29,-173.81)    2.10                58
 04/01/2021   02:04:53   ( -68.54, -32.93) 04/01/2021   02:05:55  ( -68.54, -32.90)    1.22                62
 04/01/2021   02:55:37   (  68.41, 134.54) 04/01/2021   02:55:22  (  68.42, 134.60)    2.42                15
 04/01/2021   03:46:10   ( -67.85, -57.42) 04/01/2021   03:44:59  ( -67.93, -58.35)   39.80                71
 04/03/2021   18:21:46   ( -68.47,  82.93) 04/03/2021   18:22:23  ( -68.45,  82.88)    3.01                37
 04/03/2021   19:12:30   (  68.35,-109.60) 04/03/2021   19:11:50  (  68.33,-109.63)    2.26                40