Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2021   18:49:05   (   0.07,-127.94) (  -0.61,-124.84)  352.84                80
 04/19/2021   07:10:28   (  -0.07,-127.85) (  -0.55,-130.02)  247.16                80
 04/21/2021   06:55:36   (  -0.06,-127.78) (   0.12,-127.07)   80.84                80
 04/23/2021   06:43:22   (  -0.07,-127.70) (   0.67,-124.10)  408.42                80
 04/23/2021   19:04:38   (   0.06,-127.74) (   0.38,-129.27)  173.58                80
 04/25/2021   18:55:05   (   0.06,-127.66) (  -0.24,-126.31)  153.74                80
 04/26/2021   07:16:28   (  -0.05,-127.59) (  -0.86,-131.51)  445.26                80
 04/27/2021   18:42:52   (   0.06,-127.58) (  -0.85,-123.35)  480.49                80
 04/28/2021   07:04:14   (  -0.05,-127.50) (  -0.30,-128.54)  118.91                80
 04/30/2021   06:49:22   (  -0.05,-127.40) (   0.32,-125.58)  206.67                80
 04/30/2021   19:10:37   (   0.05,-127.42) (   0.72,-130.75)  377.28                80