Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/18/2025

Index	Date (NOAA-20)	Time (NOAA-20)	Lat,Lon (NOAA-20)	SZA (NOAA-20 )	Date (LANDSAT-9)	Time (LANDSAT-9)	Lat,Lon (LANDSAT-9)	SZA (LANDSAT-9 )	Distance(km)	Time Diff (sec)
1	08/19/2025	14:53:14	70.06, -47.17	57.48	08/19/2025	14:54:23	70.06, -47.16	57.47	0.67	69
2	08/19/2025	15:43:55	-69.92, 120.35	122.66	08/19/2025	15:43:53	-69.95, 120.32	122.64	2.82	2
3	08/19/2025	16:34:35	69.59, -71.85	57.01	08/19/2025	16:33:23	69.68, -72.41	57.13	23.93	72
4	08/22/2025	07:10:08	70.04, 68.64	58.34	08/22/2025	07:10:53	70.04, 68.70	58.34	2.38	45
5	08/22/2025	08:00:49	-69.89,-123.82	121.80	08/22/2025	08:00:24	-69.88,-123.90	121.82	3.36	25
6	08/24/2025	22:36:35	-71.01, 15.54	119.74	08/24/2025	22:37:41	-70.93, 18.26	119.91	98.94	66
7	08/24/2025	23:27:01	69.96,-175.47	59.17	08/24/2025	23:27:24	69.96,-175.54	59.16	2.89	23
8	08/25/2025	00:17:43	-69.87, -8.01	120.92	08/25/2025	00:16:54	-69.85, -8.06	120.94	2.90	49
9	08/27/2025	14:53:12	-70.15, 132.71	119.72	08/27/2025	14:54:24	-70.13, 132.94	119.77	9.20	72
10	08/27/2025	15:43:54	69.95, -59.66	60.08	08/27/2025	15:43:52	69.96, -59.65	60.09	1.85	2
11	08/27/2025	16:34:36	-69.84, 107.81	120.02	08/27/2025	16:33:22	-69.86, 107.84	120.00	1.74	74
12	08/30/2025	07:10:04	-70.03,-111.32	118.90	08/30/2025	07:10:55	-70.01,-111.34	118.93	2.72	51
13	08/30/2025	08:00:47	69.88, 56.21	60.96	08/30/2025	08:00:22	69.90, 56.14	60.98	3.12	25

Figure of NOAA-20 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/18/2025

Download SNOs between NOAA-20 and LANDSAT-9 since TLE EPOCH: 08/18/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-9