Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 8 16.  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)
 08/17/2025   04:10:56   (  -0.01, 140.76) (  -0.56, 138.28)  282.66                80
 08/18/2025   03:54:52   (   0.01, 140.76) (   0.47, 142.80)  232.83                80
 08/19/2025   16:16:39   (  -0.01, 140.77) (   0.74, 137.54)  368.41                80
 08/20/2025   15:55:15   (  -0.00, 140.77) (  -0.29, 142.07)  148.03                80
 08/22/2025   04:17:10   (  -0.00, 140.76) (  -0.92, 136.77)  455.42                80
 08/23/2025   04:01:06   (  -0.00, 140.76) (   0.11, 141.30)   61.89                80
 08/25/2025   16:04:10   (   0.00, 140.73) (   0.01, 140.55)   19.73                80
 08/26/2025   15:42:44   (   0.00, 140.72) (  -0.96, 145.09)  498.33                80
 08/28/2025   04:04:40   (  -0.00, 140.70) (  -0.18, 139.78)  103.29                80
 08/29/2025   03:48:35   (  -0.01, 140.68) (   0.80, 144.32)  415.07                80
 08/30/2025   16:10:23   (   0.01, 140.65) (   0.36, 139.05)  182.62                80