Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 13.  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)
 02/14/2021   18:21:57   ( -68.47,  82.89) 02/14/2021   18:22:57  ( -68.45,  82.89)    2.42                60
 02/14/2021   19:12:41   (  68.35,-109.65) 02/14/2021   19:12:24  (  68.34,-109.60)    2.51                17
 02/14/2021   20:03:13   ( -67.73,  58.46) 02/14/2021   20:02:02  ( -67.78,  57.38)   45.68                71
 02/17/2021   10:38:51   ( -68.42,-161.27) 02/17/2021   10:39:24  ( -68.44,-161.24)    2.98                33
 02/17/2021   11:29:35   (  68.30,   6.19) 02/17/2021   11:28:52  (  68.27,   6.20)    3.42                43
 02/20/2021   02:05:08   (  68.73, 146.78) 02/20/2021   02:06:19  (  68.64, 147.26)   21.66                71
 02/20/2021   02:55:45   ( -68.37, -45.43) 02/20/2021   02:55:52  ( -68.37, -45.44)    0.75                 7
 02/20/2021   03:46:29   (  68.25, 122.03) 02/20/2021   03:45:19  (  68.25, 122.06)    1.52                70
 02/22/2021   18:21:58   (  68.47, -97.11) 02/22/2021   18:22:49  (  68.45, -97.09)    1.47                51
 02/22/2021   19:12:39   ( -68.32,  70.40) 02/22/2021   19:12:20  ( -68.30,  70.36)    2.83                19
 02/22/2021   20:03:08   (  67.39,-121.14) 02/22/2021   20:02:00  (  67.45,-122.98)   78.78                68
 02/25/2021   09:48:26   ( -69.55,-150.13) 02/25/2021   09:49:32  ( -69.44,-147.60)   99.08                66
 02/25/2021   10:38:51   (  68.42,  18.73) 02/25/2021   10:39:15  (  68.43,  18.76)    1.64                24
 02/25/2021   11:29:32   ( -68.27,-173.76) 02/25/2021   11:28:46  ( -68.28,-173.79)    1.11                46