Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 04/11/2021   17:56:45   (   0.11,-128.16) (  -0.28,-126.37)  203.37                80
 04/13/2021   06:15:45   (  -0.11,-128.03) (  -0.73,-130.97)  334.17                80
 04/14/2021   05:52:24   (  -0.11,-128.00) (   0.35,-125.97)  232.10                80
 04/15/2021   18:11:16   (   0.10,-128.05) (   0.65,-130.53)  282.84                80
 04/16/2021   17:53:15   (   0.10,-128.02) (  -0.44,-125.53)  283.34                80
 04/18/2021   06:12:14   (  -0.09,-127.88) (  -0.58,-130.13)  255.22                80
 04/19/2021   05:48:54   (  -0.09,-127.85) (   0.51,-125.12)  310.16                80
 04/20/2021   18:07:45   (   0.08,-127.88) (   0.48,-129.69)  206.33                80
 04/21/2021   17:49:45   (   0.09,-127.84) (  -0.61,-124.69)  359.21                80
 04/23/2021   06:08:44   (  -0.08,-127.70) (  -0.42,-129.28)  179.74                80
 04/24/2021   05:45:24   (  -0.09,-127.66) (   0.67,-124.28)  385.20                80