Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 8 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/22/2021   18:56:30   (   0.07,-128.21) (  -0.01,-127.78)   49.06                80
 08/24/2021   18:44:17   (   0.06,-128.23) (  -0.67,-124.83)  386.87                80
 08/25/2021   07:08:20   (  -0.09,-128.32) (  -0.47,-130.01)  193.33                80
 08/27/2021   06:53:27   (  -0.09,-128.33) (   0.20,-127.06)  144.10                80
 08/27/2021   19:17:21   (   0.12,-128.24) (   0.95,-132.21)  450.65                80
 08/29/2021   06:41:13   (  -0.08,-128.33) (   0.81,-124.10)  481.12                80
 08/29/2021   19:05:07   (   0.12,-128.25) (   0.34,-129.25)  113.70                80
 08/31/2021   18:50:13   (   0.11,-128.25) (  -0.28,-126.29)  222.59                80
 09/01/2021   07:14:17   (  -0.14,-128.34) (  -0.80,-131.48)  357.56                80
 09/03/2021   07:02:03   (  -0.14,-128.33) (  -0.18,-128.52)   22.04                80