Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 4 9.  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) (  -0.30,-126.31)  214.58                80
 04/10/2021   07:16:40   (  -0.09,-128.11) (  -0.80,-131.51)  385.90                80
 04/12/2021   07:04:27   (  -0.09,-128.06) (  -0.20,-128.54)   54.94                80
 04/14/2021   06:49:34   (  -0.10,-128.01) (   0.39,-125.58)  275.50                80
 04/14/2021   19:10:50   (   0.09,-128.07) (   0.66,-130.75)  304.46                80
 04/16/2021   19:01:17   (   0.08,-128.01) (   0.06,-127.79)   25.25                80
 04/18/2021   18:49:05   (   0.08,-127.95) (  -0.61,-124.84)  354.13                80
 04/19/2021   07:10:28   (  -0.07,-127.86) (  -0.55,-130.02)  246.07                80
 04/21/2021   06:55:35   (  -0.07,-127.79) (   0.06,-127.06)   82.16                80
 04/21/2021   19:16:51   (   0.06,-127.84) (   0.99,-132.23)  499.58                80