Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 17.  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   ( -68.41,-161.26) 02/17/2021   10:39:25  ( -68.40,-161.30)    2.38                34
 02/17/2021   11:29:35   (  68.29,   6.21) 02/17/2021   11:28:52  (  68.28,   6.21)    0.68                43
 02/20/2021   02:05:08   (  68.72, 146.79) 02/20/2021   02:06:19  (  68.66, 147.27)   20.49                71
 02/20/2021   02:55:45   ( -68.36, -45.42) 02/20/2021   02:55:52  ( -68.38, -45.43)    2.38                 7
 02/20/2021   03:46:29   (  68.24, 122.04) 02/20/2021   03:45:19  (  68.27, 122.08)    3.26                70
 02/22/2021   18:21:57   (  68.45, -97.09) 02/22/2021   18:22:48  (  68.47, -97.08)    1.28                51
 02/22/2021   19:12:38   ( -68.31,  70.41) 02/22/2021   19:12:19  ( -68.31,  70.36)    2.15                19
 02/22/2021   20:03:07   (  67.38,-121.13) 02/22/2021   20:01:59  (  67.46,-122.97)   79.20                68
 02/25/2021   09:48:26   ( -69.54,-150.12) 02/25/2021   09:49:32  ( -69.45,-147.60)   98.73                66
 02/25/2021   10:38:51   (  68.41,  18.74) 02/25/2021   10:39:15  (  68.44,  18.77)    3.35                24
 02/25/2021   11:29:32   ( -68.26,-173.76) 02/25/2021   11:28:46  ( -68.28,-173.78)    2.26                46
 02/28/2021   02:05:03   ( -68.59, -33.03) 02/28/2021   02:06:14  ( -68.59, -32.81)    8.94                71
 02/28/2021   02:55:45   (  68.37, 134.57) 02/28/2021   02:55:43  (  68.35, 134.55)    2.18                 2
 02/28/2021   03:46:26   ( -68.22, -57.93) 02/28/2021   03:45:13  ( -68.25, -57.94)    3.51                73
 03/02/2021   18:21:55   ( -68.44,  82.94) 03/02/2021   18:22:43  ( -68.44,  82.89)    1.74                48
 03/02/2021   19:12:39   (  68.33,-109.61) 03/02/2021   19:12:10  (  68.31,-109.61)    1.77                29
 03/02/2021   20:03:03   ( -67.26,  59.02) 03/02/2021   20:01:56  ( -67.32,  56.88)   91.87                67