Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 10.  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)
 09/10/2021   06:10:36   (   0.28,-128.20) (  -0.19,-130.23)  232.62                80
 09/11/2021   05:52:37   (   0.26,-128.17) (   0.92,-125.24)  334.73                80
 09/12/2021   18:08:48   (  -0.29,-128.09) (   0.10,-129.80)  194.35                80
 09/13/2021   17:50:49   (  -0.27,-128.07) (  -1.01,-124.80)  372.71                80
 09/15/2021   06:07:10   (   0.29,-128.07) (   0.02,-129.40)  150.97                80
 09/16/2021   05:49:10   (   0.27,-128.04) (   1.07,-124.39)  415.53                80
 09/17/2021   18:05:21   (  -0.30,-127.95) (  -0.06,-128.95)  114.66                80
 09/18/2021   17:47:21   (  -0.28,-127.92) (  -1.17,-123.96)  451.97                80
 09/20/2021   06:03:43   (   0.31,-127.93) (   0.19,-128.56)   71.57                80
 09/21/2021   05:45:42   (   0.30,-127.90) (   1.24,-123.55)  494.87                80
 09/22/2021   18:01:54   (  -0.32,-127.80) (  -0.23,-128.11)   35.58                80