Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2021   06:59:16   (   0.36,-127.96) (   0.25,-128.63)   76.39                80
 09/21/2021   06:49:43   (   0.36,-127.90) (   0.83,-125.67)  253.38                80
 09/21/2021   19:08:17   (  -0.37,-127.83) (   0.27,-130.83)  340.32                80
 09/23/2021   18:56:03   (  -0.37,-127.77) (  -0.32,-127.86)   11.32                80
 09/25/2021   18:46:30   (  -0.36,-127.71) (  -0.97,-124.91)  318.08                80
 09/26/2021   07:05:14   (   0.38,-127.74) (  -0.12,-130.11)  269.31                80
 09/28/2021   06:55:40   (   0.37,-127.66) (   0.47,-127.14)   58.85                80
 09/30/2021   06:43:26   (   0.36,-127.58) (   1.07,-124.18)  386.42                80
 09/30/2021   19:02:01   (  -0.37,-127.51) (   0.03,-129.34)  207.98                80
 10/02/2021   18:52:27   (  -0.37,-127.42) (  -0.57,-126.37)  119.02                80