Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 1 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 01/03/2021   18:56:17   (   0.11,-128.23) (  -0.32,-126.32)  217.68                80
 01/04/2021   07:15:01   (  -0.07,-128.20) (  -0.79,-131.51)  375.86                80
 01/06/2021   07:02:49   (  -0.08,-128.18) (  -0.16,-128.55)   41.79                80
 01/08/2021   06:53:17   (  -0.08,-128.16) (   0.47,-125.60)  291.54                80
 01/08/2021   19:11:53   (   0.05,-128.17) (   0.59,-130.76)  294.36                80
 01/10/2021   19:02:20   (   0.05,-128.13) (   0.01,-127.79)   38.20                80
 01/12/2021   18:50:08   (   0.06,-128.09) (  -0.63,-124.84)  370.17                80
 01/13/2021   07:08:52   (  -0.03,-128.06) (  -0.47,-130.03)  224.46                80
 01/15/2021   06:59:20   (  -0.03,-128.02) (   0.18,-127.08)  107.55                80
 01/15/2021   19:17:56   (  -0.00,-128.04) (   0.88,-132.24)  478.16                80