Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 8 21.  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)
 08/22/2021   23:33:59   (  69.02,-175.72) 08/22/2021   23:35:10  (  68.97,-175.29)   17.55                71
 08/23/2021   00:24:37   ( -68.73,  -8.00) 08/23/2021   00:24:42  ( -68.75,  -7.94)    3.33                 5
 08/23/2021   01:15:21   (  68.60, 159.48) 08/23/2021   01:14:10  (  68.58, 159.50)    1.39                71
 08/25/2021   15:50:51   (  68.78, -59.61) 08/25/2021   15:51:39  (  68.80, -59.63)    3.07                48
 08/25/2021   16:41:33   ( -68.69, 107.82) 08/25/2021   16:41:09  ( -68.69, 107.87)    2.08                24
 08/25/2021   17:31:59   (  67.59, -83.48) 08/25/2021   17:30:53  (  67.63, -85.75)   96.07                66
 08/28/2021   07:17:17   ( -69.66,-112.40) 08/28/2021   07:18:25  ( -69.57,-110.40)   78.45                68
 08/28/2021   08:07:46   (  68.75,  56.19) 08/28/2021   08:08:05  (  68.74,  56.17)    1.47                19
 08/28/2021   08:58:27   ( -68.61,-136.30) 08/28/2021   08:57:35  ( -68.63,-136.33)    3.12                52
 08/30/2021   23:33:58   ( -68.84,   4.53) 08/30/2021   23:35:04  ( -68.84,   4.54)    0.62                66
 08/31/2021   00:24:42   (  68.72, 172.00) 08/31/2021   00:24:31  (  68.72, 172.03)    1.34                11
 08/31/2021   01:15:18   ( -68.31, -20.14) 08/31/2021   01:14:06  ( -68.34, -20.80)   27.30                72
 09/02/2021   15:50:54   ( -68.81, 120.34) 09/02/2021   15:51:30  ( -68.83, 120.40)    3.08                36
 09/02/2021   16:41:37   (  68.64, -72.13) 09/02/2021   16:40:58  (  68.65, -72.18)    2.34                39