Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 4 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)
 04/27/2021   18:21:37   (  68.54, -97.12) 04/27/2021   18:22:06  (  68.53, -97.06)    2.89                29
 04/27/2021   19:12:17   ( -68.36,  70.44) 04/27/2021   19:11:37  ( -68.36,  70.37)    2.82                40
 04/30/2021   09:47:51   ( -68.90,-149.13) 04/30/2021   09:49:03  ( -68.80,-148.50)   27.65                72
 04/30/2021   10:38:29   (  68.46,  18.77) 04/30/2021   10:38:34  (  68.47,  18.74)    1.85                 5
 04/30/2021   11:29:11   ( -68.37,-173.80) 04/30/2021   11:28:04  ( -68.36,-173.76)    2.43                67
 05/03/2021   02:04:37   ( -68.54, -32.87) 05/03/2021   02:05:33  ( -68.56, -32.91)    3.00                56
 05/03/2021   02:55:21   (  68.42, 134.59) 05/03/2021   02:55:00  (  68.45, 134.59)    2.86                21
 05/03/2021   03:45:51   ( -67.69, -57.16) 05/03/2021   03:44:41  ( -67.73, -58.61)   61.32                70
 05/05/2021   18:21:31   ( -68.56,  82.89) 05/05/2021   18:22:00  ( -68.54,  82.95)    3.02                29
 05/05/2021   19:12:14   (  68.39,-109.59) 05/05/2021   19:11:28  (  68.37,-109.62)    2.99                46
 05/08/2021   09:47:44   (  68.73,  31.12) 05/08/2021   09:48:56  (  68.67,  31.35)   11.36                72
 05/08/2021   10:38:23   ( -68.47,-161.22) 05/08/2021   10:38:28  ( -68.46,-161.28)    2.55                 5
 05/08/2021   11:29:07   (  68.36,   6.23) 05/08/2021   11:27:55  (  68.34,   6.22)    2.82                72