Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 5 26.  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)
 05/27/2021   01:14:24   ( -68.95, -20.82) 05/27/2021   01:15:36  ( -68.84, -20.19)   27.78                72
 05/27/2021   02:05:02   (  68.51, 147.08) 05/27/2021   02:05:07  (  68.51, 147.04)    1.58                 5
 05/27/2021   02:55:44   ( -68.42, -45.48) 05/27/2021   02:54:37  ( -68.40, -45.46)    2.31                67
 05/29/2021   17:31:15   ( -68.62,  95.39) 05/29/2021   17:32:06  ( -68.61,  95.40)    1.22                51
 05/29/2021   18:21:59   (  68.50, -97.14) 05/29/2021   18:21:33  (  68.49, -97.10)    2.23                26
 05/29/2021   19:12:25   ( -67.55,  71.37) 05/29/2021   19:11:17  ( -67.60,  69.50)   79.69                68
 06/01/2021   08:57:43   (  69.40,  42.76) 06/01/2021   08:58:51  (  69.30,  44.53)   70.38                68
 06/01/2021   09:48:11   ( -68.56,-148.76) 06/01/2021   09:48:33  ( -68.53,-148.81)    3.35                22
 06/01/2021   10:38:55   (  68.44,  18.70) 06/01/2021   10:38:00  (  68.41,  18.69)    3.45                55
 06/04/2021   01:14:25   (  68.65, 159.56) 06/04/2021   01:15:27  (  68.66, 159.60)    1.86                62
 06/04/2021   02:05:06   ( -68.50, -32.92) 06/04/2021   02:04:58  ( -68.51, -32.96)    1.94                 8
 06/04/2021   02:55:42   (  67.95, 135.09) 06/04/2021   02:54:31  (  68.04, 134.14)   40.71                71
 06/06/2021   17:31:21   (  68.60, -84.60) 06/06/2021   17:31:54  (  68.57, -84.63)    3.30                33
 06/06/2021   18:22:03   ( -68.49,  82.85) 06/06/2021   18:21:24  ( -68.47,  82.89)    2.57                39