Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 14.  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)
 04/14/2021   05:52:24   (  -0.11,-128.00) (   0.32,-125.96)  232.10                80
 04/15/2021   18:11:15   (   0.10,-128.05) (   0.67,-130.53)  283.15                80
 04/16/2021   17:53:16   (   0.10,-128.02) (  -0.47,-125.54)  282.97                80
 04/18/2021   06:12:14   (  -0.09,-127.88) (  -0.61,-130.12)  255.54                80
 04/19/2021   05:48:54   (  -0.09,-127.84) (   0.54,-125.13)  309.78                80
 04/20/2021   18:07:45   (   0.08,-127.87) (   0.51,-129.68)  207.02                80
 04/21/2021   17:49:45   (   0.09,-127.84) (  -0.63,-124.69)  358.48                80
 04/23/2021   06:08:44   (  -0.08,-127.70) (  -0.45,-129.28)  180.43                80
 04/24/2021   05:45:24   (  -0.08,-127.65) (   0.70,-124.29)  384.46                80
 04/25/2021   18:04:14   (   0.08,-127.67) (   0.34,-128.84)  133.36                80
 04/26/2021   17:46:14   (   0.08,-127.63) (  -0.75,-123.84)  431.64                80