Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 12 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2021   18:47:56   (  -0.11,-127.88) (  -0.43,-126.34)  174.44                80
 12/22/2021   07:11:58   (   0.09,-127.89) (  -0.71,-131.53)  414.20                80
 12/24/2021   06:59:44   (   0.09,-127.95) (  -0.07,-128.57)   71.65                80
 12/26/2021   06:44:50   (   0.09,-128.00) (   0.57,-125.62)  270.71                80
 12/26/2021   19:08:45   (  -0.07,-128.02) (   0.51,-130.78)  313.77                80
 12/28/2021   18:53:51   (  -0.08,-128.07) (  -0.15,-127.83)   28.02                80
 12/30/2021   18:41:36   (  -0.08,-128.11) (  -0.75,-124.86)  368.81                80
 12/31/2021   07:05:40   (   0.06,-128.12) (  -0.32,-130.06)  220.24                80
 01/02/2022   06:50:45   (   0.07,-128.15) (   0.29,-127.10)  119.63                80
 01/02/2022   19:14:39   (  -0.05,-128.16) (   0.84,-132.25)  465.86                80