Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 6 21.  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)
 06/22/2025   20:14:55   (   0.01, -99.61) (  -0.70,-102.70)  352.83                80
 06/23/2025   19:58:50   (   0.02, -99.07) (   0.23, -98.15)  104.82                80
 06/26/2025   07:59:09   (  -0.01, -97.69) (   0.23, -98.83)  129.25                80
 06/27/2025   07:43:02   (  -0.00, -97.15) (  -0.65, -94.27)  328.89                80
 06/28/2025   20:02:17   (   0.00, -96.35) (  -0.74, -99.53)  362.98                80
 06/29/2025   19:46:11   (  -0.00, -95.82) (   0.20, -94.99)   95.59                80
 07/02/2025   07:46:30   (   0.01, -94.46) (   0.25, -95.66)  136.27                80
 07/03/2025   07:30:24   (   0.01, -93.93) (  -0.63, -91.10)  322.60                80
 07/04/2025   19:49:38   (  -0.00, -93.14) (  -0.75, -96.37)  368.53                80