Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 9 29.  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)
 09/29/2021   07:17:15   ( -68.90,-111.33) 09/29/2021   07:18:06  ( -68.88,-111.33)    2.15                51
 09/29/2021   08:07:59   (  68.78,  56.14) 09/29/2021   08:07:33  (  68.77,  56.17)    1.93                26
 09/29/2021   08:58:25   ( -67.83,-135.32) 09/29/2021   08:57:17  ( -67.88,-137.26)   81.39                68
 10/01/2021   22:43:43   (  69.74,-164.07) 10/01/2021   22:44:50  (  69.65,-162.08)   77.71                67
 10/01/2021   23:34:10   ( -68.85,   4.51) 10/01/2021   23:34:33  ( -68.82,   4.48)    2.71                23
 10/02/2021   00:24:54   (  68.73, 171.97) 10/02/2021   00:24:00  (  68.71, 171.98)    2.32                54
 10/04/2021   15:00:24   (  68.95, -47.18) 10/04/2021   15:01:29  (  68.92, -47.15)    2.92                65
 10/04/2021   15:51:05   ( -68.80, 120.35) 10/04/2021   15:50:59  ( -68.82, 120.35)    2.38                 6
 10/04/2021   16:41:43   (  68.36, -71.77) 10/04/2021   16:40:31  (  68.42, -72.49)   30.29                72
 10/07/2021   07:17:19   (  68.91,  68.65) 10/07/2021   07:17:55  (  68.91,  68.71)    2.19                36
 10/07/2021   08:07:59   ( -68.75,-123.82) 10/07/2021   08:07:25  ( -68.75,-123.85)    1.42                34
 10/09/2021   22:43:37   ( -69.40,  16.43) 10/09/2021   22:44:48  ( -69.28,  17.43)   41.02                71
 10/09/2021   23:34:12   (  68.81,-175.45) 10/09/2021   23:34:21  (  68.83,-175.51)    3.06                 9
 10/10/2021   00:24:54   ( -68.71,  -7.99) 10/10/2021   00:23:51  ( -68.73,  -8.00)    2.29                63
 10/12/2021   15:00:24   ( -68.93, 132.85) 10/12/2021   15:01:20  ( -68.93, 132.85)    0.89                56
 10/12/2021   15:51:07   (  68.78, -59.62) 10/12/2021   15:50:47  (  68.80, -59.66)    2.97                20
 10/12/2021   16:41:37   ( -68.03, 108.67) 10/12/2021   16:40:28  ( -68.09, 107.11)   65.04                69