Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 29.  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   ( -68.92,-149.16) 04/30/2021   09:49:02  ( -68.83,-148.46)   30.00                71
 04/30/2021   10:38:29   (  68.48,  18.75) 04/30/2021   10:38:33  (  68.50,  18.78)    3.03                 4
 04/30/2021   11:29:10   ( -68.34,-173.76) 04/30/2021   11:28:04  ( -68.33,-173.79)    1.66                66
 05/03/2021   02:04:38   ( -68.57, -32.90) 05/03/2021   02:05:34  ( -68.54, -32.94)    3.36                56
 05/03/2021   02:55:22   (  68.44, 134.57) 05/03/2021   02:55:01  (  68.43, 134.57)    1.92                21
 05/03/2021   03:45:51   ( -67.66, -57.13) 05/03/2021   03:44:42  ( -67.70, -58.64)   64.08                69
 05/05/2021   18:21:31   ( -68.53,  82.92) 05/05/2021   18:22:01  ( -68.52,  82.92)    1.57                30
 05/05/2021   19:12:15   (  68.41,-109.62) 05/05/2021   19:11:28  (  68.40,-109.58)    2.02                47
 05/08/2021   09:47:44   (  68.76,  31.09) 05/08/2021   09:48:55  (  68.71,  31.39)   13.60                71
 05/08/2021   10:38:23   ( -68.50,-161.26) 05/08/2021   10:38:27  ( -68.49,-161.24)    1.49                 4
 05/08/2021   11:29:07   (  68.39,   6.20) 05/08/2021   11:27:54  (  68.37,   6.26)    3.29                73
 05/11/2021   02:04:34   (  68.57, 147.11) 05/11/2021   02:05:24  (  68.56, 147.09)    1.95                50
 05/11/2021   02:55:16   ( -68.47, -45.44) 05/11/2021   02:54:54  ( -68.46, -45.40)    2.68                22
 05/11/2021   03:45:43   (  67.45, 123.15) 05/11/2021   03:44:36  (  67.49, 121.13)   86.34                67