Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 3 7.  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)
 03/08/2021   02:05:02   (  68.57, 147.00) 03/08/2021   02:06:12  (  68.57, 147.15)    6.17                70
 03/08/2021   02:55:42   ( -68.38, -45.44) 03/08/2021   02:55:43  ( -68.41, -45.42)    2.98                 1
 03/08/2021   03:46:24   (  68.14, 122.17) 03/08/2021   03:45:12  (  68.18, 121.96)    9.96                72
 03/10/2021   18:21:55   (  68.48, -97.12) 03/10/2021   18:22:41  (  68.48, -97.09)    1.16                46
 03/10/2021   19:12:36   ( -68.35,  70.37) 03/10/2021   19:12:11  ( -68.37,  70.42)    3.08                25
 03/10/2021   20:03:02   (  67.24,-120.96) 03/10/2021   20:01:55  (  67.30,-123.17)   95.08                67
 03/13/2021   09:48:21   ( -69.43,-149.95) 03/13/2021   09:49:28  ( -69.32,-147.78)   85.73                67
 03/13/2021   10:38:49   (  68.45,  18.70) 03/13/2021   10:39:09  (  68.43,  18.74)    2.62                20
 03/13/2021   11:29:30   ( -68.32,-173.81) 03/13/2021   11:28:39  ( -68.33,-173.76)    2.76                51
 03/16/2021   02:04:57   ( -68.50, -32.90) 03/16/2021   02:06:09  ( -68.50, -32.94)    2.08                72
 03/16/2021   02:55:41   (  68.37, 134.57) 03/16/2021   02:55:36  (  68.38, 134.56)    1.58                 5
 03/16/2021   03:46:21   ( -68.18, -57.86) 03/16/2021   03:45:07  ( -68.23, -58.00)    7.53                74
 03/18/2021   18:21:51   ( -68.47,  82.91) 03/18/2021   18:22:37  ( -68.45,  82.87)    2.54                46
 03/18/2021   19:12:35   (  68.34,-109.62) 03/18/2021   19:12:04  (  68.33,-109.63)    2.07                31