Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 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)
 09/17/2021   07:11:30   (   0.36,-128.02) (  -0.39,-131.59)  405.91                80
 09/19/2021   06:59:16   (   0.36,-127.96) (   0.19,-128.62)   75.98                80
 09/21/2021   06:49:43   (   0.36,-127.90) (   0.84,-125.67)  254.02                80
 09/21/2021   19:08:17   (  -0.37,-127.84) (   0.26,-130.83)  339.91                80
 09/23/2021   18:56:03   (  -0.37,-127.78) (  -0.33,-127.86)   10.49                80
 09/25/2021   18:46:31   (  -0.36,-127.71) (  -0.98,-124.91)  319.02                80
 09/26/2021   07:05:14   (   0.38,-127.75) (  -0.11,-130.11)  268.00                80
 09/28/2021   06:55:40   (   0.37,-127.68) (   0.48,-127.14)   60.43                80
 09/30/2021   06:43:26   (   0.36,-127.60) (   1.08,-124.18)  388.27                80
 09/30/2021   19:02:01   (  -0.37,-127.52) (   0.02,-129.34)  206.36                80