Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 28.  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)
 04/30/2021   09:47:51   ( -68.94,-149.18) 04/30/2021   09:49:02  ( -68.82,-148.48)   31.37                71
 04/30/2021   10:38:29   (  68.49,  18.72) 04/30/2021   10:38:33  (  68.48,  18.76)    1.71                 4
 04/30/2021   11:29:10   ( -68.36,-173.78) 04/30/2021   11:28:03  ( -68.37,-173.74)    2.31                67
 05/03/2021   02:04:38   ( -68.58, -32.92) 05/03/2021   02:05:33  ( -68.58, -32.89)    1.33                55
 05/03/2021   02:55:21   (  68.41, 134.62) 05/03/2021   02:55:01  (  68.41, 134.55)    2.78                20
 05/03/2021   03:45:51   ( -67.68, -57.15) 05/03/2021   03:44:41  ( -67.74, -58.60)   61.59                70
 05/05/2021   17:31:08   (  69.65, -85.95) 05/05/2021   17:32:14  (  69.55, -83.40)   99.59                66
 05/05/2021   18:21:31   ( -68.55,  82.90) 05/05/2021   18:22:00  ( -68.56,  82.96)    2.76                29
 05/05/2021   19:12:14   (  68.38,-109.57) 05/05/2021   19:11:28  (  68.38,-109.60)    1.70                46
 05/08/2021   09:47:45   (  68.77,  31.07) 05/08/2021   09:48:55  (  68.74,  31.44)   15.32                70
 05/08/2021   10:38:23   ( -68.46,-161.21) 05/08/2021   10:38:28  ( -68.47,-161.26)    2.46                 5
 05/08/2021   11:29:07   (  68.35,   6.25) 05/08/2021   11:27:55  (  68.35,   6.24)    0.47                72
 05/11/2021   02:04:34   (  68.59, 147.09) 05/11/2021   02:05:23  (  68.59, 147.13)    1.80                49
 05/11/2021   02:55:15   ( -68.43, -45.39) 05/11/2021   02:54:54  ( -68.44, -45.42)    1.37                21
 05/11/2021   03:45:43   (  67.46, 123.13) 05/11/2021   03:44:35  (  67.53, 121.17)   84.04                68