Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 27.  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)
 04/28/2021   06:05:25   (  -0.06,-127.51) (  -0.28,-128.46)  109.30                80
 04/29/2021   05:42:06   (  -0.06,-127.46) (   0.83,-123.47)  454.76                80
 04/30/2021   18:00:59   (   0.05,-127.48) (   0.17,-128.04)   62.97                80
 05/03/2021   06:02:02   (  -0.05,-127.28) (  -0.13,-127.63)   40.37                80
 05/05/2021   18:00:17   (   0.04,-127.24) (   0.01,-127.21)    5.76                80
 05/08/2021   05:56:00   (  -0.04,-127.05) (   0.04,-126.81)   28.19                80
 05/09/2021   18:14:52   (   0.04,-127.05) (   1.01,-131.36)  491.84                80
 05/10/2021   17:56:54   (   0.04,-127.00) (  -0.11,-126.37)   72.11                80