Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-20
TLE Epoch: 2021 8 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-20 Lat/Lon    Distance(km)  Time Diff(sec)
 08/18/2021   21:56:28   (   0.23,-128.18) (   0.18,-128.35)   20.37                80
 08/19/2021   21:40:24   (   0.23,-128.18) (   1.21,-123.82)  497.04                80
 08/21/2021   09:59:32   (  -0.25,-128.29) (  -0.08,-129.10)   92.38                80
 08/22/2021   09:43:27   (  -0.24,-128.30) (  -1.05,-124.56)  425.22                80
 08/23/2021   22:02:43   (   0.26,-128.22) (  -0.13,-129.87)  188.37                80
 08/24/2021   21:46:38   (   0.25,-128.23) (   0.90,-125.34)  329.08                80
 08/26/2021   10:05:47   (  -0.27,-128.33) (   0.23,-130.62)  260.73                80
 08/27/2021   09:49:41   (  -0.26,-128.34) (  -0.74,-126.08)  256.70                80
 08/28/2021   22:08:58   (   0.28,-128.26) (  -0.43,-131.39)  357.05                80
 08/29/2021   21:52:53   (   0.27,-128.26) (   0.60,-126.86)  159.70                80
 08/31/2021   10:12:01   (  -0.29,-128.35) (   0.53,-132.14)  431.76                80