Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2021 8 11.  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)
 08/12/2021   08:07:38   (  68.75,  56.20) 08/12/2021   08:08:23  (  68.76,  56.20)    0.92                45
 08/12/2021   08:58:19   ( -68.63,-136.31) 08/12/2021   08:57:53  ( -68.65,-136.31)    2.59                26
 08/14/2021   23:34:03   ( -69.54,   3.57) 08/14/2021   23:35:12  ( -69.44,   5.31)   68.49                69
 08/15/2021   00:24:34   (  68.71, 172.02) 08/15/2021   00:24:50  (  68.72, 172.03)    0.69                16
 08/15/2021   01:15:15   ( -68.58, -20.48) 08/15/2021   01:14:20  ( -68.61, -20.48)    3.18                55
 08/17/2021   15:50:46   ( -68.80, 120.36) 08/17/2021   15:51:50  ( -68.79, 120.35)    1.79                64
 08/17/2021   16:41:30   (  68.68, -72.16) 08/17/2021   16:41:17  (  68.67, -72.15)    0.43                13
 08/17/2021   17:32:04   ( -68.16,  95.83) 08/17/2021   17:30:53  ( -68.23,  94.95)   36.99                71
 08/20/2021   08:07:41   ( -68.76,-123.82) 08/20/2021   08:08:16  ( -68.74,-123.83)    2.68                35
 08/20/2021   08:58:25   (  68.64,  43.66) 08/20/2021   08:57:43  (  68.62,  43.66)    2.07                42
 08/22/2021   23:33:59   (  69.03,-175.73) 08/22/2021   23:35:10  (  68.95,-175.32)   18.39                71
 08/23/2021   00:24:37   ( -68.72,  -8.00) 08/23/2021   00:24:42  ( -68.74,  -7.95)    2.67                 5
 08/23/2021   01:15:20   (  68.55, 159.54) 08/23/2021   01:14:10  (  68.56, 159.48)    3.12                70