Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 23.  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   (  68.52, 147.07) 03/24/2021   02:06:01  (  68.53, 147.08)    1.02                64
 03/24/2021   02:55:38   ( -68.39, -45.44) 03/24/2021   02:55:31  ( -68.41, -45.42)    2.59                 7
 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  (  68.45, -97.12)    2.66                39
 03/26/2021   19:12:31   ( -68.32,  70.42) 03/26/2021   19:11:59  ( -68.34,  70.38)    3.20                32
 03/29/2021   09:48:10   ( -69.15,-149.54) 03/29/2021   09:49:19  ( -69.05,-148.15)   56.62                69
 03/29/2021   10:38:43   (  68.44,  18.73) 03/29/2021   10:38:55  (  68.43,  18.73)    0.60                12
 03/29/2021   11:29:24   ( -68.31,-173.78) 03/29/2021   11:28:25  ( -68.33,-173.76)    2.30                59
 04/01/2021   02:04:52   ( -68.50, -32.89) 04/01/2021   02:05:55  ( -68.52, -32.92)    2.71                63
 04/01/2021   02:55:36   (  68.37, 134.59) 04/01/2021   02:55:22  (  68.40, 134.58)    3.26                14
 04/01/2021   03:46:10   ( -67.86, -57.45) 04/01/2021   03:44:59  ( -67.91, -58.37)   38.91                71
 04/03/2021   18:21:46   ( -68.49,  82.90) 04/03/2021   18:22:22  ( -68.49,  82.92)    0.87                36
 04/03/2021   19:12:30   (  68.37,-109.63) 04/03/2021   19:11:49  (  68.37,-109.58)    1.94                41