Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 4 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2021   18:55:16   (   0.10,-128.20) (  -0.31,-126.31)  214.70                80
 04/10/2021   07:16:40   (  -0.09,-128.11) (  -0.79,-131.51)  385.81                80
 04/12/2021   07:04:27   (  -0.09,-128.06) (  -0.19,-128.55)   54.72                80
 04/14/2021   06:49:34   (  -0.10,-128.01) (   0.40,-125.58)  275.81                80
 04/14/2021   19:10:50   (   0.09,-128.08) (   0.65,-130.75)  304.07                80
 04/16/2021   19:01:17   (   0.09,-128.02) (   0.05,-127.79)   25.68                80
 04/18/2021   18:49:04   (   0.08,-127.96) (  -0.56,-124.83)  354.76                80
 04/19/2021   07:10:28   (  -0.07,-127.87) (  -0.54,-130.03)  245.44                80
 04/21/2021   06:55:35   (  -0.07,-127.80) (   0.07,-127.07)   82.86                80
 04/21/2021   19:16:51   (   0.06,-127.84) (   0.98,-132.23)  498.77                80