Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 16.  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)
 02/17/2021   10:38:51   ( -68.43,-161.28) 02/17/2021   10:39:24  ( -68.44,-161.25)    1.76                33
 02/17/2021   11:29:34   (  68.25,   6.26) 02/17/2021   11:28:52  (  68.27,   6.20)    3.22                42
 02/20/2021   02:05:08   (  68.73, 146.77) 02/20/2021   02:06:19  (  68.64, 147.25)   21.84                71
 02/20/2021   02:55:45   ( -68.37, -45.44) 02/20/2021   02:55:52  ( -68.37, -45.45)    0.66                 7
 02/20/2021   03:46:29   (  68.25, 122.02) 02/20/2021   03:45:19  (  68.25, 122.06)    1.47                70
 02/22/2021   18:21:58   (  68.47, -97.11) 02/22/2021   18:22:49  (  68.45, -97.09)    1.80                51
 02/22/2021   19:12:39   ( -68.32,  70.40) 02/22/2021   19:12:19  ( -68.35,  70.42)    3.10                20
 02/22/2021   20:03:08   (  67.39,-121.14) 02/22/2021   20:02:00  (  67.45,-122.98)   78.77                68
 02/25/2021   09:48:26   ( -69.55,-150.13) 02/25/2021   09:49:32  ( -69.44,-147.61)   99.27                66
 02/25/2021   10:38:51   (  68.42,  18.72) 02/25/2021   10:39:15  (  68.43,  18.76)    1.59                24
 02/25/2021   11:29:32   ( -68.28,-173.77) 02/25/2021   11:28:46  ( -68.27,-173.79)    1.01                46
 02/28/2021   02:05:03   ( -68.60, -33.05) 02/28/2021   02:06:14  ( -68.58, -32.82)    9.64                71
 02/28/2021   02:55:45   (  68.38, 134.55) 02/28/2021   02:55:42  (  68.40, 134.61)    3.10                 3
 02/28/2021   03:46:26   ( -68.23, -57.94) 02/28/2021   03:45:13  ( -68.25, -57.94)    1.54                73