Ephemeris for 21P/Giacobini-Zinner

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All times computed for South El Monte (latitude 34.05°; longitude -118.05°) and expressed in South El Monte time.

Ephemeris for 21P/Giacobini-Zinner
Date	Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation
Date	Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation

Ephemeris for 21P/Giacobini-Zinner
Date			Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation
Date			Time	Age of Moon	Right Ascension	Declination	Rise	Culm	Set	Approx Mag.	Observable (hover mouse)	Constellation
2025	Dec	13	16:00 PST	24 days	10^h02^m45^s	−20°52'13"	23:21	04:25	09:28	18.7	01:36 until 05:42	Hydra
2025	Dec	14	16:00 PST	25 days	10^h02^m36^s	−20°58'10"	23:18	04:21	09:24	18.7	01:33 until 05:43	Hydra
2025	Dec	15	16:00 PST	25 days	10^h02^m26^s	−21°03'58"	23:14	04:16	09:19	18.7	01:29 until 05:43	Hydra
2025	Dec	16	16:00 PST	26 days	10^h02^m14^s	−21°09'36"	23:10	04:12	09:15	18.7	01:25 until 05:44	Hydra
2025	Dec	17	16:00 PST	27 days	10^h02^m01^s	−21°15'04"	23:06	04:08	09:10	18.7	01:22 until 05:44	Hydra
2025	Dec	18	16:00 PST	28 days	10^h01^m46^s	−21°20'22"	23:02	04:04	09:06	18.8	01:18 until 05:45	Hydra
2025	Dec	19	16:00 PST	29 days	10^h01^m30^s	−21°25'30"	22:58	04:00	09:01	18.8	01:15 until 05:46	Hydra
2025	Dec	20	16:00 PST	00 days	10^h01^m13^s	−21°30'26"	22:54	03:56	08:57	18.8	01:11 until 05:46	Hydra
2025	Dec	21	16:00 PST	01 days	10^h00^m54^s	−21°35'12"	22:50	03:51	08:52	18.8	01:07 until 05:47	Hydra
2025	Dec	22	16:00 PST	02 days	10^h00^m34^s	−21°39'47"	22:46	03:47	08:48	18.8	01:03 until 05:47	Hydra
2025	Dec	23	16:00 PST	03 days	10^h00^m12^s	−21°44'10"	22:42	03:43	08:43	18.8	00:59 until 05:48	Hydra
2025	Dec	24	16:00 PST	04 days	09^h59^m49^s	−21°48'21"	22:38	03:39	08:39	18.8	00:55 until 05:48	Hydra
2025	Dec	25	16:00 PST	05 days	09^h59^m25^s	−21°52'20"	22:34	03:34	08:34	18.8	00:51 until 05:48	Hydra
2025	Dec	26	16:00 PST	06 days	09^h58^m59^s	−21°56'07"	22:30	03:30	08:30	18.8	00:48 until 05:49	Hydra
2025	Dec	27	16:00 PST	07 days	09^h58^m32^s	−21°59'41"	22:26	03:25	08:25	18.8	00:43 until 05:49	Hydra
2025	Dec	28	16:00 PST	08 days	09^h58^m04^s	−22°03'03"	22:21	03:21	08:21	18.9	00:39 until 05:50	Hydra
2025	Dec	29	16:00 PST	09 days	09^h57^m34^s	−22°06'12"	22:17	03:17	08:16	18.9	00:35 until 05:50	Hydra
2025	Dec	30	16:00 PST	10 days	09^h57^m03^s	−22°09'07"	22:13	03:12	08:11	18.9	00:31 until 05:50	Hydra
2025	Dec	31	16:00 PST	11 days	09^h56^m31^s	−22°11'49"	22:09	03:08	08:07	18.9	00:27 until 05:48	Hydra
2026	Jan	01	16:00 PST	13 days	09^h55^m58^s	−22°14'18"	22:04	03:03	08:02	18.9	00:23 until 05:44	Hydra
2026	Jan	02	16:00 PST	14 days	09^h55^m23^s	−22°16'33"	22:00	02:59	07:57	18.9	00:18 until 05:39	Hydra
2026	Jan	03	16:00 PST	15 days	09^h54^m47^s	−22°18'34"	21:55	02:54	07:53	18.9	00:14 until 05:34	Hydra
2026	Jan	04	16:00 PST	16 days	09^h54^m10^s	−22°20'20"	21:51	02:50	07:48	18.9	00:10 until 05:29	Hydra
2026	Jan	05	16:00 PST	17 days	09^h53^m31^s	−22°21'53"	21:47	02:45	07:44	18.9	00:05 until 05:25	Hydra
2026	Jan	06	16:00 PST	18 days	09^h52^m52^s	−22°23'10"	21:42	02:40	07:39	18.9	00:01 until 05:20	Hydra
All times computed for South El Monte (latitude 34.05; longitude -118.05) and expressed in South El Monte time. Ephemeris by Dominic Ford – https://in-the-sky.org/ephemeris.php

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