Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between HIMAWARI-9 and NOAA-21 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/17/2025

Index	Date	Time (HIMAWARI-9)	HIMAWARI-9 Lat,Lon	NOAA-21 Lat,Lon	Distance(km)	Time Diff (sec)
1	04/19/2025	16:00:28	0.02, 140.78	0.00, 140.83	5.85	80
2	04/22/2025	04:03:35	-0.03, 140.76	-0.17, 140.07	78.32	80
3	04/23/2025	03:47:28	-0.03, 140.76	0.85, 144.61	439.78	80
4	04/24/2025	16:09:14	0.03, 140.75	0.32, 139.35	158.72	80
5	04/25/2025	15:47:47	0.03, 140.74	-0.70, 143.89	359.52	80
6	04/27/2025	04:09:40	-0.03, 140.72	-0.51, 138.60	241.21	80
7	04/28/2025	03:53:33	-0.03, 140.71	0.52, 143.14	277.46	80
8	04/29/2025	16:15:18	0.04, 140.69	0.65, 137.88	319.97	80
9	04/30/2025	15:53:51	0.04, 140.68	-0.32, 142.43	198.74	80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 4/17/2025

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 04/17/2025 in txt file.

Historical Predications of SNOs between HIMAWARI-9 and NOAA-21