Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 3.  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)
 04/04/2021   05:59:24   (  -0.12,-128.22) (   0.01,-127.65)   65.64                80
 04/05/2021   18:18:15   (   0.12,-128.29) (   1.00,-132.21)  446.87                80
 04/06/2021   18:00:16   (   0.12,-128.27) (  -0.14,-127.22)  120.59                80
 04/08/2021   06:19:14   (  -0.11,-128.15) (  -0.93,-131.80)  416.24                80
 04/09/2021   05:55:54   (  -0.12,-128.13) (   0.15,-126.80)  150.95                80
 04/10/2021   18:14:46   (   0.11,-128.20) (   0.80,-131.38)  361.88                80
 04/11/2021   17:56:45   (   0.12,-128.18) (  -0.28,-126.38)  205.52                80
 04/13/2021   06:15:45   (  -0.11,-128.06) (  -0.73,-130.97)  331.44                80
 04/14/2021   05:52:24   (  -0.11,-128.03) (   0.35,-125.97)  235.21                80
 04/15/2021   18:11:16   (   0.10,-128.08) (   0.65,-130.53)  278.97                80
 04/16/2021   17:53:15   (   0.10,-128.06) (  -0.44,-125.53)  287.62                80