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: 8/25/2025

Index	Date	Time (HIMAWARI-9)	HIMAWARI-9 Lat,Lon	NOAA-21 Lat,Lon	Distance(km)	Time Diff (sec)
1	08/25/2025	16:04:10	-0.02, 140.75	-0.01, 140.55	21.56	80
2	08/26/2025	15:42:44	-0.02, 140.74	-0.98, 145.09	496.07	80
3	08/28/2025	04:04:41	0.02, 140.72	-0.16, 139.78	106.16	80
4	08/29/2025	03:48:35	0.02, 140.71	0.82, 144.32	411.72	80
5	08/30/2025	16:10:23	-0.03, 140.69	0.34, 139.05	186.97	80
6	08/31/2025	15:48:59	-0.03, 140.68	-0.70, 143.57	330.82	80
7	09/02/2025	04:10:54	0.04, 140.65	-0.49, 138.28	271.11	80
8	09/03/2025	03:54:50	0.04, 140.64	0.55, 142.80	247.17	80
9	09/04/2025	16:16:37	-0.05, 140.61	0.66, 137.54	350.41	80
10	09/05/2025	15:55:13	-0.05, 140.59	-0.38, 142.07	168.11	80
11	09/07/2025	04:17:08	0.05, 140.56	-0.80, 136.77	432.75	80
12	09/08/2025	04:01:03	0.05, 140.54	0.24, 141.29	86.53	80

Figure of HIMAWARI-9 and NOAA-21 satellite orbits during SNOs since TLE Epoch: 8/25/2025

Download SNOs between HIMAWARI-9 and NOAA-21 since TLE EPOCH: 08/25/2025 in txt file.

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