Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/17/2021   06:48:39   (   0.10,-128.44) (   0.73,-125.64)  318.77                80
 06/17/2021   19:09:54   (  -0.10,-128.42) (   0.37,-130.80)  270.34                80
 06/19/2021   19:00:20   (  -0.10,-128.39) (  -0.20,-127.83)   63.37                80
 06/21/2021   18:48:07   (  -0.10,-128.37) (  -0.83,-124.88)  396.35                80
 06/22/2021   07:09:31   (   0.10,-128.38) (  -0.26,-130.07)  192.04                80
 06/24/2021   06:54:38   (   0.10,-128.34) (   0.38,-127.12)  139.75                80
 06/24/2021   19:15:53   (  -0.10,-128.30) (   0.72,-132.28)  451.36                80
 06/26/2021   06:42:24   (   0.11,-128.30) (   0.97,-124.15)  470.97                80
 06/26/2021   19:03:39   (  -0.11,-128.26) (   0.13,-129.31)  120.00                80
 06/28/2021   18:54:06   (  -0.11,-128.21) (  -0.51,-126.36)  211.28                80
 06/29/2021   07:15:30   (   0.11,-128.24) (  -0.57,-131.55)  375.89                80