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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/15/2021   18:50:33   (   0.03,-128.15) (  -0.37,-126.31)  208.75                80
 08/16/2021   07:14:36   (  -0.06,-128.24) (  -0.78,-131.50)  370.89                80
 08/18/2021   07:02:23   (  -0.05,-128.26) (  -0.12,-128.54)   32.41                80
 08/20/2021   06:47:30   (  -0.05,-128.28) (   0.54,-125.59)  305.49                80
 08/20/2021   19:11:24   (   0.08,-128.19) (   0.61,-130.74)  289.35                80
 08/22/2021   18:56:31   (   0.07,-128.21) (  -0.05,-127.79)   48.69                80
 08/24/2021   18:44:17   (   0.06,-128.23) (  -0.65,-124.83)  386.66                80
 08/25/2021   07:08:21   (  -0.09,-128.32) (  -0.43,-130.02)  192.60                80
 08/27/2021   06:53:27   (  -0.08,-128.34) (   0.18,-127.06)  145.08                80
 08/27/2021   19:17:21   (   0.11,-128.25) (   0.97,-132.20)  450.47                80