Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/01/2021   06:51:38   (   0.19,-128.17) (   0.43,-127.15)  117.31                80
 12/01/2021   19:15:32   (  -0.18,-128.18) (   0.71,-132.29)  467.44                80
 12/03/2021   06:39:23   (   0.20,-128.12) (   1.02,-124.18)  448.28                80
 12/03/2021   19:03:18   (  -0.18,-128.13) (   0.06,-129.34)  136.66                80
 12/05/2021   18:48:23   (  -0.18,-128.07) (  -0.54,-126.37)  193.38                80
 12/06/2021   07:12:25   (   0.16,-128.04) (  -0.59,-131.56)  400.87                80
 12/08/2021   07:00:11   (   0.16,-127.97) (   0.02,-128.60)   71.25                80
 12/10/2021   06:45:16   (   0.16,-127.91) (   0.62,-125.63)  258.40                80
 12/10/2021   19:09:10   (  -0.14,-127.91) (   0.45,-130.79)  326.92                80
 12/12/2021   18:54:15   (  -0.14,-127.85) (  -0.16,-127.83)    3.32                80
 12/14/2021   18:42:01   (  -0.14,-127.79) (  -0.78,-124.87)  332.14                80