Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-20
TLE Epoch: 2021 7 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)
 07/18/2021   21:40:21   (   0.06,-127.61) (   0.95,-123.75)  440.30                80
 07/20/2021   09:59:30   (  -0.09,-127.63) (   0.20,-129.03)  158.98                80
 07/21/2021   09:43:24   (  -0.08,-127.58) (  -0.76,-124.49)  352.65                80
 07/22/2021   22:02:40   (   0.10,-127.43) (  -0.42,-129.79)  269.34                80
 07/23/2021   21:46:35   (   0.09,-127.38) (   0.54,-125.25)  242.24                80
 07/25/2021   10:05:43   (  -0.12,-127.40) (   0.61,-130.53)  357.42                80
 07/26/2021   09:49:39   (  -0.11,-127.35) (  -0.41,-126.00)  154.13                80
 07/27/2021   22:08:55   (   0.13,-127.19) (  -0.77,-131.31)  468.03                80
 07/28/2021   21:52:50   (   0.12,-127.15) (   0.20,-126.76)   43.57                80
 07/31/2021   09:53:12   (  -0.13,-127.11) (  -0.01,-127.50)   44.79                80