Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 29.  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)
 04/29/2021   05:42:06   (  -0.06,-127.46) (   0.81,-123.47)  454.47                80
 04/30/2021   18:00:59   (   0.05,-127.48) (   0.19,-128.03)   62.89                80
 05/03/2021   06:02:02   (  -0.04,-127.28) (  -0.15,-127.63)   40.84                80
 05/05/2021   18:00:17   (   0.04,-127.25) (   0.03,-127.20)    4.80                80
 05/08/2021   05:56:00   (  -0.04,-127.04) (   0.01,-126.80)   27.66                80
 05/09/2021   18:14:53   (   0.03,-127.05) (   0.97,-131.37)  491.80                80
 05/10/2021   17:56:53   (   0.04,-127.00) (  -0.08,-126.36)   72.19                80
 05/12/2021   06:15:56   (  -0.03,-126.85) (  -0.93,-130.97)  468.71                80