Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 4 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/27/2021   18:42:51   (   0.05,-127.61) (  -0.85,-123.35)  483.99                80
 04/28/2021   07:04:15   (  -0.04,-127.51) (  -0.25,-128.55)  116.92                80
 04/30/2021   06:49:22   (  -0.04,-127.43) (   0.38,-125.59)  209.60                80
 04/30/2021   19:10:37   (   0.03,-127.47) (   0.72,-130.75)  372.38                80
 05/02/2021   18:58:23   (   0.03,-127.38) (   0.15,-127.78)   46.41                80
 05/04/2021   18:48:50   (   0.03,-127.28) (  -0.49,-124.82)  279.70                80
 05/05/2021   07:10:14   (  -0.02,-127.20) (  -0.60,-130.02)  319.99                80
 05/07/2021   06:55:20   (  -0.02,-127.10) (  -0.02,-127.05)    6.04                80
 05/09/2021   06:43:06   (  -0.03,-127.01) (   0.57,-124.08)  331.91                80
 05/09/2021   19:04:22   (   0.02,-127.04) (   0.47,-129.25)  251.54                80