Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 1.  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)
 09/01/2021   05:59:29   (   0.21,-128.27) (   0.52,-126.90)  156.29                80
 09/02/2021   18:15:41   (  -0.24,-128.22) (   0.51,-131.46)  369.48                80
 09/03/2021   17:57:41   (  -0.22,-128.22) (  -0.59,-126.46)  199.56                80
 09/05/2021   06:14:03   (   0.25,-128.24) (  -0.39,-131.07)  322.05                80
 09/06/2021   05:56:03   (   0.23,-128.23) (   0.71,-126.07)  246.43                80
 09/07/2021   18:12:15   (  -0.27,-128.17) (   0.25,-130.64)  280.30                80
 09/08/2021   17:54:15   (  -0.25,-128.16) (  -0.79,-125.63)  288.22                80
 09/10/2021   06:10:36   (   0.28,-128.19) (  -0.20,-130.23)  233.77                80
 09/11/2021   05:52:37   (   0.26,-128.17) (   0.91,-125.24)  334.11                80
 09/12/2021   18:08:48   (  -0.29,-128.10) (   0.11,-129.79)  193.94                80
 09/13/2021   17:50:49   (  -0.27,-128.08) (  -1.00,-124.80)  373.65                80