Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 7.  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)
 09/07/2021   18:12:15   (  -0.27,-128.18) (   0.25,-130.64)  279.01                80
 09/08/2021   17:54:15   (  -0.25,-128.18) (  -0.80,-125.63)  289.80                80
 09/10/2021   06:10:36   (   0.28,-128.20) (  -0.19,-130.23)  231.80                80
 09/11/2021   05:52:37   (   0.26,-128.19) (   0.91,-125.24)  336.36                80
 09/12/2021   18:08:48   (  -0.29,-128.12) (   0.10,-129.79)  191.23                80
 09/13/2021   17:50:49   (  -0.27,-128.10) (  -1.01,-124.80)  376.64                80
 09/15/2021   06:07:10   (   0.29,-128.12) (   0.02,-129.40)  146.03                80
 09/16/2021   05:49:10   (   0.27,-128.10) (   1.13,-124.41)  421.25                80
 09/17/2021   18:05:22   (  -0.30,-128.02) (  -0.11,-128.96)  107.49                80
 09/18/2021   17:47:21   (  -0.28,-128.00) (  -1.17,-123.95)  459.96                80
 09/20/2021   06:03:43   (   0.31,-128.01) (   0.18,-128.56)   62.59                80