Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 5 12.  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)
 05/13/2021   05:52:42   (  -0.01,-128.06) (   0.47,-126.04)  230.96                80
 05/14/2021   18:11:35   (   0.00,-128.14) (   0.57,-130.59)  280.24                80
 05/15/2021   17:53:36   (   0.00,-128.17) (  -0.55,-125.60)  291.76                80
 05/17/2021   06:12:38   (   0.01,-128.17) (  -0.47,-130.20)  232.77                80
 05/18/2021   05:49:20   (   0.00,-128.18) (   0.64,-125.21)  338.17                80
 05/19/2021   18:08:13   (  -0.01,-128.25) (   0.33,-129.78)  174.70                80
 05/20/2021   17:50:15   (  -0.01,-128.27) (  -0.79,-124.79)  396.78                80
 05/22/2021   06:09:17   (   0.01,-128.27) (  -0.23,-129.39)  127.63                80
 05/23/2021   05:45:59   (   0.01,-128.28) (   0.89,-124.40)  442.90                80
 05/24/2021   18:04:51   (  -0.01,-128.34) (   0.14,-128.96)   71.46                80
 05/25/2021   17:46:52   (  -0.00,-128.35) (  -0.97,-123.97)  499.34                80