Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 19.  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)
 02/20/2021   02:05:08   (  68.73, 146.78) 02/20/2021   02:06:19  (  68.66, 147.28)   21.57                71
 02/20/2021   02:55:45   ( -68.38, -45.44) 02/20/2021   02:55:52  ( -68.39, -45.43)    1.26                 7
 02/20/2021   03:46:29   (  68.25, 122.03) 02/20/2021   03:45:19  (  68.27, 122.08)    3.33                70
 02/22/2021   18:21:58   (  68.47, -97.11) 02/22/2021   18:22:50  (  68.45, -97.10)    1.94                52
 02/22/2021   19:12:39   ( -68.33,  70.39) 02/22/2021   19:12:20  ( -68.34,  70.40)    2.04                19
 02/22/2021   20:03:09   (  67.45,-121.21) 02/22/2021   20:02:00  (  67.50,-122.93)   73.59                69
 02/25/2021   10:38:51   (  68.42,  18.72) 02/25/2021   10:39:17  (  68.40,  18.72)    2.40                26
 02/25/2021   11:29:32   ( -68.28,-173.78) 02/25/2021   11:28:47  ( -68.30,-173.77)    2.12                45
 02/28/2021   02:05:04   ( -68.66, -33.13) 02/28/2021   02:06:16  ( -68.58, -32.82)   14.92                72
 02/28/2021   02:55:45   (  68.38, 134.55) 02/28/2021   02:55:44  (  68.41, 134.61)    3.50                 1
 02/28/2021   03:46:26   ( -68.24, -57.95) 02/28/2021   03:45:15  ( -68.25, -57.95)    1.44                71
 03/02/2021   18:21:55   ( -68.46,  82.91) 03/02/2021   18:22:45  ( -68.48,  82.92)    1.74                50
 03/02/2021   19:12:39   (  68.34,-109.63) 03/02/2021   19:12:12  (  68.35,-109.58)    2.12                27
 03/02/2021   20:03:05   ( -67.39,  58.87) 03/02/2021   20:01:57  ( -67.42,  56.97)   80.99                68