Sunrise and sunset in Castanhal

Today’s sunrise, sunset and twilight in Castanhal, in local time. At 1.3° S, near the equator, the day lasts about 12 h 07 min all year round.

Today · worked out at 18:10 UTC

Wednesday, October 21: sunrise at 05:51, sunset at 18:00.

Day length 12 h 09 min, 5 s longer than yesterday.

Solar noon at 11:56, with the Sun 80° above the horizon.

Times are Castanhal time (GMT-3).

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Twilight and golden hour today

Each twilight begins at the morning time and ends at the evening one.

Longest day: December 21, 12 h 12 min, from sunrise at 06:03 to sunset at 18:15.
Shortest day: June 21, 12 h 03 min, from sunrise at 06:12 to sunset at 18:15.

Date	Sunrise	Sunset	Day length
January 21	06:17	18:28	12 h 11 min
February 21	06:20	18:29	12 h 09 min
March 21	06:15	18:22	12 h 06 min
April 21	06:08	18:12	12 h 05 min
May 21	06:06	18:09	12 h 03 min
June 21	06:12	18:15	12 h 03 min
July 21	06:16	18:19	12 h 03 min
August 21	06:12	18:17	12 h 04 min
September 21	06:01	18:07	12 h 06 min
October 21	05:51	18:00	12 h 09 min
November 21	05:52	18:03	12 h 11 min
December 21	06:03	18:15	12 h 12 min

Sunrise and sunset are when the top of the Sun meets a level horizon, allowing for the usual bending of light by the air. Hills, buildings and height shift what you see by a few minutes.
Civil, nautical and astronomical twilight end when the Sun is 6°, 12° and 18° below the horizon. Golden hour here is the photographers’ usual definition: the Sun less than 6° above it.
Worked out when the page loads from NOAA’s solar equations, for 1.3° S, 47.9° W, and accurate to about a minute.

How the layers work, where their data comes from and what they can’t tell you: Day and night, live, The Sun, Moon and planets