Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 9 2.  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)
 09/02/2021   15:50:54   ( -68.82, 120.32) 09/02/2021   15:51:30  ( -68.82, 120.38)    2.55                36
 09/02/2021   16:41:37   (  68.64, -72.13) 09/02/2021   16:40:58  (  68.65, -72.18)    2.46                39
 09/05/2021   07:17:13   (  69.15,  68.32) 09/05/2021   07:18:23  (  69.07,  68.96)   26.57                70
 09/05/2021   08:07:49   ( -68.74,-123.80) 09/05/2021   08:07:57  ( -68.74,-123.83)    1.21                 8
 09/05/2021   08:58:33   (  68.62,  43.67) 09/05/2021   08:57:24  (  68.63,  43.67)    0.78                69
 09/07/2021   23:34:02   (  68.81,-175.44) 09/07/2021   23:34:52  (  68.82,-175.48)    1.87                50
 09/08/2021   00:24:44   ( -68.72,  -8.00) 09/08/2021   00:24:22  ( -68.71,  -7.98)    1.29                22
 09/08/2021   01:15:11   (  67.68, 160.63) 09/08/2021   01:14:04  (  67.75, 158.53)   89.07                67
 09/10/2021   15:00:30   ( -69.76, 131.68) 09/10/2021   15:01:37  ( -69.67, 133.87)   85.05                67
 09/10/2021   15:50:58   (  68.79, -59.65) 09/10/2021   15:51:18  (  68.78, -59.65)    1.47                20
 09/10/2021   16:41:40   ( -68.70, 107.79) 09/10/2021   16:40:48  ( -68.68, 107.86)    3.54                52
 09/13/2021   07:17:10   ( -68.89,-111.32) 09/13/2021   07:18:17  ( -68.86,-111.31)    3.16                67
 09/13/2021   08:07:53   (  68.73,  56.21) 09/13/2021   08:07:44  (  68.74,  56.18)    1.80                 9
 09/13/2021   08:58:30   ( -68.36,-135.99) 09/13/2021   08:57:18  ( -68.42,-136.58)   24.85                72
 09/15/2021   23:34:05   ( -68.82,   4.54) 09/15/2021   23:34:43  ( -68.82,   4.52)    0.95                38
 09/16/2021   00:24:49   (  68.71, 172.00) 09/16/2021   00:24:10  (  68.69, 172.01)    2.51                39