Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 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)
 09/05/2021   06:14:03   (   0.26,-128.25) (  -0.36,-131.07)  321.70                80
 09/06/2021   05:56:04   (   0.24,-128.24) (   0.74,-126.08)  246.88                80
 09/07/2021   18:12:15   (  -0.27,-128.18) (   0.28,-130.63)  279.66                80
 09/08/2021   17:54:15   (  -0.25,-128.17) (  -0.82,-125.64)  288.93                80
 09/10/2021   06:10:37   (   0.28,-128.19) (  -0.17,-130.24)  232.96                80
 09/11/2021   05:52:37   (   0.26,-128.18) (   0.94,-125.24)  335.01                80
 09/12/2021   18:08:49   (  -0.29,-128.11) (   0.08,-129.80)  192.85                80
 09/13/2021   17:50:49   (  -0.27,-128.09) (  -1.03,-124.80)  374.83                80
 09/15/2021   06:07:09   (   0.29,-128.10) (  -0.02,-129.39)  148.18                80
 09/16/2021   05:49:10   (   0.27,-128.07) (   1.09,-124.40)  418.92                80
 09/17/2021   18:05:21   (  -0.30,-127.99) (  -0.07,-128.96)  110.05                80