Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 4 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 04/22/2023   08:25:23   (   0.00,-104.73) (   0.03,-104.97)   26.23                80
 04/23/2023   08:03:56   (   0.00,-104.73) (  -0.93,-100.42)  491.00                80
 04/24/2023   20:25:49   (  -0.00,-104.74) (  -0.25,-105.71)  112.01                80
 04/25/2023   20:09:43   (  -0.00,-104.74) (   0.78,-101.18)  405.40                80
 04/27/2023   08:31:27   (   0.00,-104.74) (   0.41,-106.44)  193.97                80
 04/28/2023   08:10:01   (   0.00,-104.74) (  -0.63,-101.90)  323.31                80
 04/29/2023   20:31:54   (  -0.00,-104.74) (  -0.54,-107.20)  279.67                80
 04/30/2023   20:15:46   (  -0.00,-104.75) (   0.44,-102.65)  238.08                80
 05/02/2023   08:37:32   (  -0.00,-104.76) (   0.68,-107.92)  360.30                80
 05/03/2023   08:16:04   (   0.00,-104.76) (  -0.30,-103.38)  157.23                80
 05/04/2023   20:37:58   (   0.00,-104.76) (  -0.85,-108.68)  446.00                80
 05/05/2023   20:21:50   (   0.00,-104.76) (   0.14,-104.13)   71.58                80