Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 8 13.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 08/14/2025   16:10:25   (  -0.00, 140.77) (   0.41, 139.05)  196.05                80
 08/15/2025   15:49:00   (  -0.00, 140.76) (  -0.61, 143.58)  320.94                80
 08/17/2025   04:10:57   (   0.01, 140.73) (  -0.56, 138.27)  280.37                80
 08/18/2025   03:54:52   (   0.01, 140.72) (   0.47, 142.80)  237.17                80
 08/19/2025   16:16:39   (   0.00, 140.72) (   0.74, 137.54)  363.29                80
 08/20/2025   15:55:15   (   0.00, 140.71) (  -0.29, 142.07)  154.51                80
 08/22/2025   04:17:11   (  -0.01, 140.67) (  -0.86, 136.76)  445.40                80
 08/23/2025   04:01:06   (  -0.01, 140.65) (   0.11, 141.30)   73.36                80
 08/25/2025   16:04:10   (   0.01, 140.61) (   0.01, 140.55)    6.00                80