Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/12/2021   06:55:57   (   0.34,-128.16) (   0.56,-127.15)  114.56                80
 09/12/2021   19:14:32   (  -0.36,-128.09) (   0.54,-132.30)  479.73                80
 09/14/2021   06:43:44   (   0.33,-128.10) (   1.19,-124.19)  445.27                80
 09/14/2021   19:02:19   (  -0.35,-128.04) (  -0.10,-129.35)  149.16                80
 09/16/2021   18:52:45   (  -0.35,-127.98) (  -0.67,-126.39)  180.94                80
 09/17/2021   07:11:29   (   0.36,-128.02) (  -0.42,-131.58)  405.40                80
 09/19/2021   06:59:16   (   0.36,-127.96) (   0.23,-128.63)   75.31                80
 09/21/2021   06:49:42   (   0.36,-127.91) (   0.81,-125.66)  254.76                80
 09/21/2021   19:08:17   (  -0.37,-127.84) (   0.28,-130.82)  339.90                80
 09/23/2021   18:56:04   (  -0.37,-127.78) (  -0.37,-127.87)   10.21                80