Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-20
TLE Epoch: 2021 4 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-20 Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2021   22:43:04   (   0.04,-137.20) (  -0.37,-139.13)  220.00                80
 04/16/2021   22:21:40   (   0.04,-137.20) (   0.62,-134.60)  295.66                80
 04/18/2021   10:46:08   (  -0.03,-137.19) (   0.57,-139.87)  306.33                80
 04/19/2021   10:24:43   (  -0.03,-137.18) (  -0.43,-135.34)  208.82                80
 04/20/2021   22:46:41   (   0.02,-137.16) (  -0.74,-140.65)  397.84                80
 04/21/2021   22:30:36   (   0.02,-137.15) (   0.25,-136.12)  117.02                80
 04/23/2021   10:52:25   (  -0.01,-137.13) (   0.93,-141.40)  485.99                80
 04/24/2021   10:31:00   (  -0.02,-137.12) (  -0.07,-136.86)   28.46                80
 04/26/2021   22:34:13   (   0.02,-137.07) (  -0.11,-137.65)   65.36                80
 04/27/2021   22:18:08   (   0.02,-137.05) (   0.89,-133.11)  448.47                80