Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 6 20.  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)
 06/21/2025   07:55:41   (  -0.01,-100.41) (  -0.66, -97.43)  339.91                80
 06/22/2025   20:14:56   (   0.01, -99.61) (  -0.66,-102.70)  352.71                80
 06/23/2025   19:58:50   (   0.01, -99.07) (   0.21, -98.15)  104.94                80
 06/26/2025   07:59:08   (  -0.01, -97.69) (   0.25, -98.82)  129.34                80
 06/27/2025   07:43:03   (  -0.01, -97.15) (  -0.68, -94.27)  328.57                80
 06/28/2025   20:02:17   (   0.01, -96.35) (  -0.70, -99.54)  363.45                80
 06/29/2025   19:46:11   (   0.01, -95.82) (   0.18, -94.98)   95.06                80
 07/02/2025   07:46:30   (  -0.00, -94.46) (   0.28, -95.66)  136.71                80
 07/03/2025   07:30:24   (  -0.00, -93.93) (  -0.66, -91.11)  322.10                80