Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 5 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 05/02/2021   18:58:25   (   0.02,-127.73) (   0.03,-127.80)    7.90                80
 05/04/2021   18:48:52   (   0.02,-127.81) (  -0.61,-124.85)  337.25                80
 05/05/2021   07:10:16   (  -0.01,-127.80) (  -0.48,-130.04)  254.64                80
 05/07/2021   06:55:23   (  -0.02,-127.88) (   0.16,-127.09)   90.34                80
 05/07/2021   19:16:38   (   0.01,-127.93) (   0.94,-132.24)  491.16                80
 05/09/2021   06:43:10   (  -0.02,-127.96) (   0.80,-124.13)  435.21                80
 05/09/2021   19:04:25   (   0.01,-128.01) (   0.29,-129.29)  146.13                80
 05/11/2021   18:54:52   (   0.02,-128.08) (  -0.36,-126.34)  198.32                80
 05/12/2021   07:16:15   (  -0.01,-128.08) (  -0.73,-131.53)  392.25                80
 05/14/2021   07:04:03   (  -0.01,-128.14) (  -0.08,-128.58)   48.96                80