Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 20.  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)
 03/21/2021   09:48:15   (  69.18,  30.40) 03/21/2021   09:49:24  (  69.09,  31.92)   60.65                69
 03/21/2021   10:38:44   ( -68.41,-161.24) 03/21/2021   10:39:04  ( -68.43,-161.28)    2.40                20
 03/21/2021   11:29:29   (  68.33,   6.17) 03/21/2021   11:28:31  (  68.31,   6.23)    2.72                58
 03/24/2021   02:04:57   (  68.52, 147.08) 03/24/2021   02:06:01  (  68.53, 147.09)    1.28                64
 03/24/2021   02:55:38   ( -68.39, -45.44) 03/24/2021   02:55:32  ( -68.36, -45.48)    3.15                 6
 03/24/2021   03:46:16   (  67.93, 122.45) 03/24/2021   03:45:04  (  67.97, 121.70)   31.59                72
 03/26/2021   18:21:50   (  68.45, -97.06) 03/26/2021   18:22:29  (  68.46, -97.12)    2.84                39
 03/26/2021   19:12:32   ( -68.37,  70.36) 03/26/2021   19:11:59  ( -68.35,  70.39)    2.08                33
 03/29/2021   09:48:10   ( -69.15,-149.53) 03/29/2021   09:49:19  ( -69.06,-148.13)   56.32                69
 03/29/2021   10:38:43   (  68.43,  18.74) 03/29/2021   10:38:55  (  68.44,  18.74)    0.80                12
 03/29/2021   11:29:24   ( -68.30,-173.77) 03/29/2021   11:28:26  ( -68.28,-173.82)    2.60                58
 04/01/2021   02:04:53   ( -68.54, -32.94) 04/01/2021   02:05:55  ( -68.54, -32.90)    1.73                62
 04/01/2021   02:55:37   (  68.42, 134.53) 04/01/2021   02:55:22  (  68.41, 134.59)    2.65                15
 04/01/2021   03:46:10   ( -67.85, -57.43) 04/01/2021   03:44:59  ( -67.93, -58.35)   39.22                71