Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 7 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)
 07/27/2021   08:07:29   (  68.79,  56.18) 07/27/2021   08:08:38  (  68.79,  56.24)    2.41                69
 07/27/2021   08:58:10   ( -68.66,-136.33) 07/27/2021   08:58:08  ( -68.67,-136.27)    2.85                 2
 07/27/2021   09:48:51   (  68.36,  31.37) 07/27/2021   09:47:38  (  68.40,  31.04)   14.03                73
 07/30/2021   00:24:25   (  68.74, 172.02) 07/30/2021   00:25:06  (  68.72, 172.03)    2.07                41
 07/30/2021   01:15:06   ( -68.61, -20.49) 07/30/2021   01:14:36  ( -68.61, -20.47)    0.81                30
 08/01/2021   15:50:47   ( -69.40, 119.55) 08/01/2021   15:51:56  ( -69.31, 121.02)   58.32                69
 08/01/2021   16:41:20   (  68.69, -72.15) 08/01/2021   16:41:32  (  68.70, -72.12)    2.09                12
 08/01/2021   17:32:01   ( -68.55,  95.35) 08/01/2021   17:31:03  ( -68.54,  95.32)    2.01                58
 08/04/2021   08:07:32   ( -68.76,-123.80) 08/04/2021   08:08:32  ( -68.79,-123.77)    3.34                60
 08/04/2021   08:58:16   (  68.64,  43.68) 08/04/2021   08:58:00  (  68.62,  43.66)    2.07                16
 08/04/2021   09:48:48   ( -68.02,-148.20) 08/04/2021   09:47:38  ( -68.07,-149.36)   48.65                70
 08/07/2021   00:24:28   ( -68.71,  -7.96) 08/07/2021   00:25:00  ( -68.71,  -7.99)    1.25                32
 08/07/2021   01:15:12   (  68.59, 159.51) 08/07/2021   01:14:27  (  68.59, 159.51)    0.22                45
 08/09/2021   15:50:44   (  68.86, -59.71) 08/09/2021   15:51:56  (  68.83, -59.59)    5.93                72
 08/09/2021   16:41:24   ( -68.66, 107.87) 08/09/2021   16:41:27  ( -68.68, 107.85)    1.51                 3
 08/09/2021   17:32:07   (  68.49, -84.59) 08/09/2021   17:30:55  (  68.50, -84.73)    5.58                72