Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 8 22.  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   (  69.04,-175.74) 08/22/2021   23:35:10  (  68.95,-175.32)   19.53                71
 08/23/2021   00:24:37   ( -68.75,  -8.03) 08/23/2021   00:24:42  ( -68.73,  -7.97)    3.42                 5
 08/23/2021   01:15:20   (  68.56, 159.53) 08/23/2021   01:14:10  (  68.56, 159.47)    2.29                70
 08/25/2021   15:50:51   (  68.80, -59.64) 08/25/2021   15:51:39  (  68.78, -59.66)    1.80                48
 08/25/2021   16:41:32   ( -68.66, 107.86) 08/25/2021   16:41:09  ( -68.67, 107.84)    1.37                23
 08/25/2021   17:31:59   (  67.61, -83.50) 08/25/2021   17:30:52  (  67.66, -85.71)   93.33                67
 08/28/2021   07:17:18   ( -69.69,-112.43) 08/28/2021   07:18:25  ( -69.60,-110.35)   81.02                67
 08/28/2021   08:07:47   (  68.76,  56.17) 08/28/2021   08:08:05  (  68.77,  56.21)    1.82                18
 08/28/2021   08:58:28   ( -68.63,-136.33) 08/28/2021   08:57:36  ( -68.61,-136.36)    2.21                52
 08/30/2021   23:33:58   ( -68.80,   4.58) 08/30/2021   23:35:05  ( -68.82,   4.51)    3.39                67
 08/31/2021   00:24:42   (  68.68, 172.05) 08/31/2021   00:24:32  (  68.70, 172.00)    2.60                10
 08/31/2021   01:15:18   ( -68.27, -20.10) 08/31/2021   01:14:06  ( -68.37, -20.76)   29.55                72
 09/02/2021   15:50:54   ( -68.82, 120.32) 09/02/2021   15:51:30  ( -68.80, 120.37)    3.14                36
 09/02/2021   16:41:37   (  68.65, -72.15) 09/02/2021   16:40:57  (  68.68, -72.14)    2.79                40