Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 2 25.  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)
 02/25/2023   20:17:06   (   0.01,-104.70) (   0.41,-102.84)  211.20                80
 02/27/2023   08:38:54   (  -0.01,-104.69) (   0.73,-108.12)  390.36                80
 02/28/2023   08:17:28   (  -0.01,-104.69) (  -0.24,-103.58)  125.81                80
 03/01/2023   20:39:25   (   0.02,-104.70) (  -0.95,-108.89)  478.63                80
 03/02/2023   20:23:20   (   0.02,-104.70) (   0.08,-104.37)   37.75                80
 03/05/2023   08:26:23   (  -0.03,-104.70) (   0.07,-105.11)   47.02                80
 03/06/2023   08:04:59   (  -0.02,-104.70) (  -0.96,-100.59)  469.44                80
 03/07/2023   20:26:54   (   0.03,-104.71) (  -0.26,-105.88)  134.49                80
 03/08/2023   20:10:49   (   0.03,-104.71) (   0.78,-101.36)  382.37                80
 03/10/2023   08:32:37   (  -0.03,-104.72) (   0.40,-106.63)  218.13                80
 03/11/2023   08:11:11   (  -0.03,-104.72) (  -0.59,-102.09)  298.47                80