Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 8 21.  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   18:56:31   (   0.07,-128.21) (  -0.04,-127.79)   49.10                80
 08/24/2021   18:44:17   (   0.06,-128.23) (  -0.65,-124.82)  386.93                80
 08/25/2021   07:08:21   (  -0.09,-128.32) (  -0.43,-130.02)  193.09                80
 08/27/2021   06:53:27   (  -0.08,-128.33) (   0.18,-127.06)  144.44                80
 08/27/2021   19:17:21   (   0.12,-128.25) (   0.97,-132.20)  450.44                80
 08/29/2021   06:41:13   (  -0.08,-128.34) (   0.79,-124.10)  481.58                80
 08/29/2021   19:05:08   (   0.11,-128.25) (   0.30,-129.26)  113.43                80
 08/31/2021   18:50:14   (   0.11,-128.25) (  -0.32,-126.29)  222.99                80
 09/01/2021   07:14:17   (  -0.14,-128.34) (  -0.82,-131.48)  356.97                80
 09/03/2021   07:02:03   (  -0.14,-128.34) (  -0.20,-128.52)   21.50                80