Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 10 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/12/2021   07:07:35   (   0.36,-128.07) (  -0.08,-130.11)  232.47                80
 10/14/2021   06:52:41   (   0.36,-128.12) (   0.55,-127.16)  109.62                80
 10/14/2021   19:13:56   (  -0.36,-128.12) (   0.53,-132.32)  476.68                80
 10/16/2021   06:40:27   (   0.35,-128.17) (   1.19,-124.20)  451.64                80
 10/16/2021   19:01:42   (  -0.35,-128.18) (  -0.11,-129.36)  134.57                80
 10/18/2021   18:52:08   (  -0.35,-128.23) (  -0.75,-126.40)  207.53                80
 10/19/2021   07:13:31   (   0.35,-128.25) (  -0.38,-131.59)  379.94                80
 10/21/2021   07:01:17   (   0.35,-128.30) (   0.27,-128.64)   38.22                80
 10/23/2021   06:46:23   (   0.35,-128.34) (   0.93,-125.68)  302.99                80
 10/23/2021   19:10:18   (  -0.34,-128.34) (   0.16,-130.84)  283.78                80
 10/25/2021   18:55:23   (  -0.34,-128.37) (  -0.44,-127.87)   56.71                80