Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 2 27.  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)
 02/28/2021   02:05:05   ( -68.73, -33.21) 02/28/2021   02:06:17  ( -68.64, -32.77)   20.48                72
 02/28/2021   02:55:45   (  68.38, 134.54) 02/28/2021   02:55:47  (  68.36, 134.54)    2.76                 2
 02/28/2021   03:46:26   ( -68.25, -57.97) 02/28/2021   03:45:17  ( -68.25, -57.96)    0.28                69
 03/02/2021   18:21:55   ( -68.47,  82.90) 03/02/2021   18:22:48  ( -68.45,  82.88)    2.17                53
 03/02/2021   19:12:39   (  68.34,-109.63) 03/02/2021   19:12:15  (  68.34,-109.61)    1.13                24
 03/02/2021   20:03:06   ( -67.45,  58.79) 03/02/2021   20:01:58  ( -67.51,  57.06)   74.05                68
 03/05/2021   09:48:25   (  69.48,  29.97) 03/05/2021   09:49:31  (  69.36,  32.28)   91.05                66
 03/05/2021   10:38:49   ( -68.43,-161.28) 03/05/2021   10:39:16  ( -68.43,-161.27)    0.48                27
 03/05/2021   11:29:33   (  68.30,   6.19) 03/05/2021   11:28:43  (  68.31,   6.23)    1.60                50
 03/08/2021   02:05:02   (  68.53, 147.04) 03/08/2021   02:06:13  (  68.55, 147.12)    3.80                71
 03/08/2021   02:55:43   ( -68.39, -45.46) 03/08/2021   02:55:44  ( -68.39, -45.43)    0.98                 1
 03/08/2021   03:46:25   (  68.16, 122.15) 03/08/2021   03:45:12  (  68.22, 122.00)    8.73                73
 03/10/2021   18:21:54   (  68.44, -97.07) 03/10/2021   18:22:41  (  68.45, -97.11)    2.35                47
 03/10/2021   19:12:36   ( -68.35,  70.37) 03/10/2021   19:12:11  ( -68.36,  70.40)    1.49                25
 03/10/2021   20:03:01   (  67.20,-120.91) 03/10/2021   20:01:55  (  67.28,-123.19)   98.26                66