Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 5 23.  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)
 05/24/2021   09:48:06   (  68.55,  31.26) 05/24/2021   09:48:41  (  68.54,  31.20)    2.52                35
 05/24/2021   10:38:48   ( -68.46,-161.30) 05/24/2021   10:38:11  ( -68.43,-161.30)    2.70                37
 05/27/2021   01:14:25   ( -68.98, -20.86) 05/27/2021   01:15:36  ( -68.87, -20.15)   30.47                71
 05/27/2021   02:05:03   (  68.54, 147.04) 05/27/2021   02:05:07  (  68.53, 147.07)    1.51                 4
 05/27/2021   02:55:44   ( -68.39, -45.45) 05/27/2021   02:54:38  ( -68.37, -45.49)    2.85                66
 05/29/2021   17:31:15   ( -68.59,  95.42) 05/29/2021   17:32:07  ( -68.58,  95.37)    2.60                52
 05/29/2021   18:21:58   (  68.48, -97.12) 05/29/2021   18:21:33  (  68.46, -97.13)    2.12                25
 05/29/2021   19:12:25   ( -67.58,  71.34) 05/29/2021   19:11:16  ( -67.63,  69.53)   76.66                69
 06/01/2021   08:57:43   (  69.44,  42.71) 06/01/2021   08:58:50  (  69.33,  44.57)   73.68                67
 06/01/2021   09:48:11   ( -68.59,-148.80) 06/01/2021   09:48:32  ( -68.57,-148.77)    2.72                21
 06/01/2021   10:38:54   (  68.42,  18.72) 06/01/2021   10:37:59  (  68.44,  18.73)    2.07                55
 06/04/2021   01:14:25   (  68.63, 159.59) 06/04/2021   01:15:28  (  68.64, 159.57)    0.96                63
 06/04/2021   02:05:07   ( -68.53, -32.96) 06/04/2021   02:04:58  ( -68.54, -32.91)    2.41                 9
 06/04/2021   02:55:43   (  67.99, 135.04) 06/04/2021   02:54:32  (  68.02, 134.11)   38.88                71