Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 19.  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)
 04/19/2021   05:48:54   (  -0.09,-127.84) (   0.50,-125.12)  309.94                80
 04/20/2021   18:07:45   (   0.08,-127.87) (   0.49,-129.69)  206.61                80
 04/21/2021   17:49:45   (   0.08,-127.84) (  -0.60,-124.68)  358.97                80
 04/23/2021   06:08:44   (  -0.07,-127.70) (  -0.43,-129.28)  180.01                80
 04/24/2021   05:45:23   (  -0.08,-127.66) (   0.66,-124.28)  384.94                80
 04/25/2021   18:04:15   (   0.08,-127.68) (   0.32,-128.85)  132.65                80
 04/26/2021   17:46:14   (   0.08,-127.64) (  -0.77,-123.84)  432.44                80
 04/28/2021   06:05:14   (  -0.07,-127.49) (  -0.26,-128.44)  107.17                80
 04/29/2021   05:41:53   (  -0.07,-127.44) (   0.83,-123.44)  456.90                80
 04/30/2021   18:00:43   (   0.06,-127.45) (   0.20,-127.99)   62.57                80