Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/20/2026

Index	Date (NOAA-20)	Time (NOAA-20)	Lat,Lon (NOAA-20)	SZA (NOAA-20 )	Date (LANDSAT-8)	Time (LANDSAT-8)	Lat,Lon (LANDSAT-8)	SZA (LANDSAT-8 )	Distance(km)	Time Diff (sec)
1	04/20/2026	12:49:26	-70.39, 164.02	121.32	04/20/2026	12:50:08	-70.40, 164.09	121.31	3.24	42
2	04/20/2026	13:40:10	70.27, -28.49	58.55	04/20/2026	13:39:36	70.25, -28.49	58.53	2.11	34
3	04/23/2026	04:15:50	71.02, 111.43	58.46	04/23/2026	04:16:58	70.94, 113.15	58.33	62.91	68
4	04/23/2026	05:06:21	-70.36, -80.16	122.25	04/23/2026	05:06:37	-70.33, -80.13	122.28	3.07	16
5	04/23/2026	05:57:05	70.24, 87.33	57.62	04/23/2026	05:56:04	70.23, 87.37	57.61	2.05	61
6	04/25/2026	20:32:33	70.43,-131.81	56.95	04/25/2026	20:33:34	70.42,-131.76	56.93	2.26	61
7	04/25/2026	21:23:14	-70.28, 35.75	123.22	04/25/2026	21:23:04	-70.30, 35.71	123.19	3.00	10
8	04/25/2026	22:13:49	69.70,-156.05	56.18	04/25/2026	22:12:39	69.76,-157.42	56.27	53.17	70
9	04/28/2026	12:49:27	70.36, -15.91	56.03	04/28/2026	12:50:02	70.37, -15.95	56.03	1.63	35
10	04/28/2026	13:40:09	-70.26, 151.57	124.09	04/28/2026	13:39:32	-70.26, 151.53	124.09	1.49	37
11	05/01/2026	04:15:46	-70.86, -68.26	124.27	05/01/2026	04:16:57	-70.75, -67.15	124.41	42.49	71
12	05/01/2026	05:06:22	70.35, 99.89	55.19	05/01/2026	05:06:29	70.37, 99.93	55.21	2.51	7
13	05/01/2026	05:57:04	-70.24, -92.62	124.94	05/01/2026	05:55:59	-70.26, -92.59	124.91	2.50	65
14	05/03/2026	20:32:33	-70.43, 48.23	125.51	05/03/2026	20:33:30	-70.41, 48.23	125.54	2.41	57
15	05/03/2026	21:23:16	70.29,-144.23	54.33	05/03/2026	21:22:57	70.30,-144.29	54.34	2.38	19

Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 4/20/2026

Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 04/20/2026 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-8