Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 13.  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)
 04/13/2021   06:15:44   (  -0.10,-128.03) (  -0.75,-130.96)  334.13                80
 04/14/2021   05:52:24   (  -0.11,-128.00) (   0.33,-125.96)  232.08                80
 04/15/2021   18:11:15   (   0.10,-128.05) (   0.67,-130.53)  283.08                80
 04/16/2021   17:53:16   (   0.10,-128.02) (  -0.48,-125.54)  283.06                80
 04/18/2021   06:12:14   (  -0.09,-127.88) (  -0.60,-130.12)  255.49                80
 04/19/2021   05:48:55   (  -0.09,-127.84) (   0.54,-125.13)  309.85                80
 04/20/2021   18:07:45   (   0.08,-127.87) (   0.51,-129.68)  206.86                80
 04/21/2021   17:49:45   (   0.09,-127.84) (  -0.64,-124.70)  358.65                80
 04/23/2021   06:08:44   (  -0.08,-127.70) (  -0.44,-129.28)  180.29                80
 04/24/2021   05:45:23   (  -0.08,-127.66) (   0.64,-124.28)  384.61                80
 04/25/2021   18:04:14   (   0.08,-127.67) (   0.34,-128.84)  133.12                80
 04/26/2021   17:46:14   (   0.08,-127.63) (  -0.75,-123.84)  431.89                80