Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 6 19.  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)
 06/20/2025   08:11:47   (  -0.00,-100.95) (   0.22,-101.98)  117.97                80
 06/21/2025   07:55:41   (  -0.01,-100.41) (  -0.65, -97.42)  339.78                80
 06/22/2025   20:14:56   (   0.02, -99.61) (  -0.67,-102.70)  353.00                80
 06/23/2025   19:58:49   (   0.02, -99.07) (   0.20, -98.14)  104.69                80
 06/26/2025   07:59:08   (  -0.01, -97.69) (   0.26, -98.82)  129.50                80
 06/27/2025   07:43:03   (  -0.01, -97.15) (  -0.68, -94.27)  328.64                80
 06/28/2025   20:02:17   (   0.00, -96.35) (  -0.70, -99.54)  363.15                80
 06/29/2025   19:46:11   (  -0.00, -95.82) (   0.18, -94.98)   95.40                80
 07/02/2025   07:46:29   (   0.00, -94.46) (   0.27, -95.66)  136.51                80
 07/03/2025   07:30:23   (   0.01, -93.93) (  -0.61, -91.10)  322.35                80