Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/20/2025

Index	Date (NPP)	Time (NPP)	Lat,Lon (NPP)	SZA (NPP )	Date (LANDSAT-9)	Time (LANDSAT-9)	Lat,Lon (LANDSAT-9)	SZA (LANDSAT-9 )	Distance(km)	Time Diff (sec)
1	09/21/2025	04:54:07	-70.34, -76.92	110.37	09/21/2025	04:54:58	-70.34, -76.89	110.37	1.44	51
2	09/21/2025	05:44:51	70.24, 90.54	69.54	09/21/2025	05:44:25	70.25, 90.61	69.55	2.90	26
3	09/21/2025	06:35:17	-69.28,-100.72	111.42	09/21/2025	06:34:10	-69.31,-103.05	111.37	91.72	67
4	09/23/2025	20:20:40	71.23,-129.96	71.57	09/23/2025	20:21:46	71.15,-127.42	71.46	91.56	66
5	09/23/2025	21:11:06	-70.28, 38.93	109.39	09/23/2025	21:11:30	-70.27, 38.88	109.40	2.08	24
6	09/23/2025	22:01:50	70.18,-153.61	70.53	09/23/2025	22:00:57	70.17,-153.62	70.51	1.52	53
7	09/26/2025	12:37:23	70.35, -12.73	71.71	09/26/2025	12:38:31	70.33, -12.78	71.69	2.23	68
8	09/26/2025	13:28:05	-70.23, 154.77	108.40	09/26/2025	13:28:01	-70.23, 154.69	108.41	2.92	4
9	09/26/2025	14:18:43	69.82, -37.29	71.20	09/26/2025	14:17:32	69.90, -38.12	71.29	33.03	71
10	09/29/2025	04:54:22	70.31, 103.09	72.71	09/29/2025	04:55:01	70.32, 103.07	72.72	1.33	39
11	09/29/2025	05:45:05	-70.23, -89.48	107.36	09/29/2025	05:44:31	-70.21, -89.45	107.38	2.91	34
12	10/01/2025	20:20:47	-70.88, 50.62	105.69	10/01/2025	20:21:57	-70.76, 51.98	105.81	51.26	70
13	10/01/2025	21:11:20	70.27,-141.09	73.71	10/01/2025	21:11:30	70.27,-141.11	73.71	0.60	10
14	10/01/2025	22:02:02	-70.14, 26.42	106.41	10/01/2025	22:01:00	-70.17, 26.37	106.38	3.29	62
15	10/04/2025	12:37:36	-70.38, 167.19	105.17	10/04/2025	12:38:32	-70.37, 167.27	105.17	3.03	56
16	10/04/2025	13:28:19	70.25, -25.29	74.72	10/04/2025	13:27:59	70.26, -25.25	74.73	2.10	20

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

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 09/20/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9