Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2019 9 21.  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)
 09/22/2019   05:47:52   (   0.24,-127.87) (   1.02,-124.41)  395.24                80
 09/23/2019   18:04:03   (  -0.26,-127.87) (  -0.02,-128.97)  125.20                80
 09/24/2019   17:46:02   (  -0.24,-127.83) (  -1.09,-123.96)  440.54                80
 09/26/2019   06:02:23   (   0.26,-127.73) (   0.07,-128.56)   95.15                80
 09/27/2019   05:44:23   (   0.25,-127.69) (   1.19,-123.57)  470.00                80
 09/28/2019   18:00:35   (  -0.27,-127.67) (  -0.19,-128.13)   51.53                80
 10/01/2019   05:58:54   (   0.28,-127.53) (   0.24,-127.72)   21.77                80
 10/03/2019   17:59:45   (  -0.28,-127.46) (  -0.29,-127.28)   20.51                80