Simultaneous Nadir Overpasses (SNOs) Predictions

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

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 3/10/2026

Index	Date (NOAA-21)	Time (NOAA-21)	Lat,Lon (NOAA-21)	SZA (NOAA-21 )	Date (LANDSAT-9)	Time (LANDSAT-9)	Lat,Lon (LANDSAT-9)	SZA (LANDSAT-9 )	Distance(km)	Time Diff (sec)
1	03/11/2026	13:39:06	70.27, -28.48	73.85	03/11/2026	13:40:06	70.25, -28.42	73.82	3.04	60
2	03/11/2026	14:29:47	-70.15, 139.02	106.29	03/11/2026	14:29:36	-70.13, 139.04	106.31	2.24	11
3	03/11/2026	15:20:21	69.48, -52.67	73.00	03/11/2026	15:19:12	69.54, -54.14	73.12	57.50	69
4	03/14/2026	05:55:59	70.20, 87.41	72.72	03/14/2026	05:56:33	70.22, 87.42	72.73	2.53	34
5	03/14/2026	06:46:41	-70.13,-105.16	107.38	03/14/2026	06:46:03	-70.11,-105.11	107.40	2.97	38
6	03/16/2026	21:22:17	-70.73, 35.03	107.78	03/16/2026	21:23:27	-70.60, 36.22	107.96	45.97	70
7	03/16/2026	22:12:53	70.19,-156.79	71.64	03/16/2026	22:13:00	70.16,-156.78	71.61	2.65	7
8	03/16/2026	23:03:34	-70.06, 10.73	108.51	03/16/2026	23:02:30	-70.05, 10.70	108.51	1.27	64
9	03/19/2026	13:39:02	-70.25, 151.59	109.35	03/19/2026	13:39:59	-70.25, 151.59	109.36	0.48	57
10	03/19/2026	14:29:46	70.13, -40.92	70.52	03/19/2026	14:29:26	70.14, -40.93	70.52	0.49	20
11	03/19/2026	15:20:15	-69.36, 127.54	110.31	03/19/2026	15:19:07	-69.42, 125.72	110.17	71.43	68
12	03/22/2026	05:55:54	-70.20, -92.55	110.47	03/22/2026	05:56:24	-70.20, -92.59	110.48	1.74	30
13	03/22/2026	06:46:38	70.09, 74.93	69.40	03/22/2026	06:45:51	70.08, 74.89	69.41	1.69	47

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/10/2026

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/10/2026 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-9