Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 9 5.  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)
 09/05/2021   07:17:14   (  69.20,  68.25) 09/05/2021   07:18:24  (  69.10,  68.99)   31.06                70
 09/05/2021   08:07:49   ( -68.74,-123.80) 09/05/2021   08:07:58  ( -68.77,-123.80)    2.58                 9
 09/05/2021   08:58:33   (  68.62,  43.68) 09/05/2021   08:57:26  (  68.60,  43.64)    2.11                67
 09/07/2021   23:34:02   (  68.81,-175.44) 09/07/2021   23:34:55  (  68.82,-175.49)    2.82                53
 09/08/2021   00:24:44   ( -68.72,  -8.00) 09/08/2021   00:24:25  ( -68.72,  -7.99)    0.71                19
 09/08/2021   01:15:13   (  67.79, 160.50) 09/08/2021   01:14:05  (  67.88, 158.65)   78.25                68
 09/10/2021   15:50:58   (  68.79, -59.65) 09/10/2021   15:51:23  (  68.77, -59.68)    2.78                25
 09/10/2021   16:41:39   ( -68.65, 107.86) 09/10/2021   16:40:53  ( -68.67, 107.82)    2.68                46
 09/13/2021   07:17:11   ( -68.95,-111.40) 09/13/2021   07:18:22  ( -68.95,-111.23)    6.55                71
 09/13/2021   08:07:54   (  68.78,  56.14) 09/13/2021   08:07:50  (  68.77,  56.19)    2.29                 4
 09/13/2021   08:58:34   ( -68.58,-136.27) 09/13/2021   08:57:21  ( -68.61,-136.37)    5.74                73
 09/15/2021   23:34:05   ( -68.82,   4.54) 09/15/2021   23:34:51  ( -68.84,   4.51)    2.12                46
 09/16/2021   00:24:49   (  68.71, 172.00) 09/16/2021   00:24:18  (  68.72, 172.00)    0.41                31
 09/18/2021   15:00:29   (  69.50, -47.95) 09/18/2021   15:01:38  (  69.44, -46.47)   58.15                69
 09/18/2021   15:51:00   ( -68.81, 120.33) 09/18/2021   15:51:18  ( -68.79, 120.32)    2.61                18
 09/18/2021   16:41:43   (  68.65, -72.15) 09/18/2021   16:40:45  (  68.66, -72.19)    2.05                58