Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 9 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 09/28/2025   08:39:36   (  -0.07,-104.70) (   0.72,-108.19)  397.69                80
 09/29/2025   08:18:11   (  -0.08,-104.70) (  -0.30,-103.65)  118.93                80
 09/30/2025   20:40:05   (   0.08,-104.70) (  -0.90,-108.94)  484.34                80
 10/01/2025   20:23:59   (   0.08,-104.70) (   0.12,-104.41)   32.83                80
 10/04/2025   08:27:00   (  -0.08,-104.71) (   0.04,-105.14)   49.84                80
 10/05/2025   08:05:35   (  -0.09,-104.71) (  -0.99,-100.60)  467.10                80
 10/06/2025   20:27:29   (   0.08,-104.71) (  -0.21,-105.90)  136.05                80
 10/07/2025   20:11:24   (   0.09,-104.71) (   0.83,-101.37)  381.19                80
 10/09/2025   08:33:10   (  -0.08,-104.72) (   0.34,-106.63)  217.74                80
 10/10/2025   08:11:43   (  -0.08,-104.71) (  -0.64,-102.09)  298.80                80