Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/16/2021   18:52:46   (  -0.35,-127.98) (  -0.71,-126.39)  181.11                80
 09/17/2021   07:11:30   (   0.36,-128.02) (  -0.38,-131.59)  405.56                80
 09/19/2021   06:59:16   (   0.36,-127.96) (   0.20,-128.62)   75.59                80
 09/21/2021   06:49:43   (   0.36,-127.91) (   0.84,-125.67)  254.41                80
 09/21/2021   19:08:18   (  -0.37,-127.84) (   0.25,-130.83)  339.97                80
 09/23/2021   18:56:04   (  -0.37,-127.78) (  -0.33,-127.86)   10.38                80
 09/25/2021   18:46:31   (  -0.37,-127.71) (  -0.98,-124.91)  318.99                80
 09/26/2021   07:05:14   (   0.38,-127.75) (  -0.10,-130.11)  267.56                80
 09/28/2021   06:55:40   (   0.37,-127.68) (   0.49,-127.15)   60.90                80