Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/14/2021   06:43:44   (   0.33,-128.10) (   1.17,-124.19)  445.29                80
 09/14/2021   19:02:19   (  -0.35,-128.04) (  -0.07,-129.35)  149.04                80
 09/16/2021   18:52:46   (  -0.35,-127.98) (  -0.71,-126.39)  181.10                80
 09/17/2021   07:11:30   (   0.36,-128.02) (  -0.38,-131.59)  405.28                80
 09/19/2021   06:59:16   (   0.36,-127.97) (   0.20,-128.62)   75.20                80
 09/21/2021   06:49:43   (   0.36,-127.91) (   0.84,-125.67)  254.92                80
 09/21/2021   19:08:18   (  -0.37,-127.84) (   0.25,-130.83)  339.68                80
 09/23/2021   18:56:04   (  -0.37,-127.78) (  -0.34,-127.86)    9.96                80
 09/25/2021   18:46:31   (  -0.37,-127.72) (  -0.99,-124.91)  319.54                80
 09/26/2021   07:05:14   (   0.38,-127.76) (  -0.10,-130.11)  266.73                80