Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 3 31.  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)
 04/01/2021   18:03:45   (   0.13,-128.36) (   0.06,-128.06)   35.15                80
 04/04/2021   05:59:24   (  -0.13,-128.23) (   0.01,-127.65)   66.05                80
 04/05/2021   18:18:15   (   0.12,-128.29) (   1.01,-132.21)  446.79                80
 04/06/2021   18:00:16   (   0.12,-128.28) (  -0.14,-127.22)  120.74                80
 04/08/2021   06:19:14   (  -0.12,-128.16) (  -0.93,-131.80)  415.52                80
 04/09/2021   05:55:54   (  -0.12,-128.14) (   0.15,-126.80)  151.71                80
 04/10/2021   18:14:46   (   0.12,-128.20) (   0.80,-131.38)  361.47                80
 04/11/2021   17:56:45   (   0.12,-128.18) (  -0.28,-126.38)  206.00                80
 04/13/2021   06:15:44   (  -0.11,-128.07) (  -0.79,-130.96)  330.35                80
 04/14/2021   05:52:24   (  -0.11,-128.04) (   0.36,-125.97)  236.35                80