the correction to sundial, due to the Sun's non-uniform eastward motion along the ecliptic throughout the year (which in turn arises from the Earth's orbit about the Sun being slightly eccentric, and inclined to the Earth's equator).a longitude correction from the standard meridian of your time zone, and.Local noon will generally differ from 12:00 because of: local noon occurs when the Sun is due south, and highest in altitude above the horizon for that day.The sunrise-sunset table gives the following times for each day of the year. Hunters in such provinces should not rely on our data but respect the official times. It is worth noting that some provinces, e.g., Nova Scotia, publish official times of sunrise/sunset in their hunting regulations. The times shown are in Standard Time, so 1 hour must be added for those dates that daylight savings time is in effect. There is no need to change any of the default settings and only the sunrise and sunset times are relevant (local noon and twilight times etc. If the area is not near a town or city, or if the nearest town or city is not in our database, you can select the area of interest by longitude and latitude. Select your location of interest by typing the name of the nearest town or city. Some provinces define these periods in relation to the times of sunrise and sunset, which can be obtained using the sunrise/sunset calculator. Hunting regulations typically restrict hunting and/or the discharge of firearms to certain periods of the day. For mountain-top observatories, a correction is made to the sunrise/set times for the dip of the horizon, which depends on the altitude of the site above the surroundings. They are important in relation to safe driving practices (eg., headlights on after dark), aviation practices, hunting regulations, etc. This could occur on as many as 2 days per year at certain high latitudes. For example, the start of civil twilight may occur twice on a single calendar day. If an event occurs twice on the same date, the application identifies only the first occurrence. Hence the rise and set times are only calculated to the nearest minute, based on average atmospheric refraction. Even on a perfect (sea) horizon, variations in the atmospheric temperature profile can cause the amount of atmospheric refraction of light to vary, such that observed rise and set times may deviate from the computed values by 1 or 2 minutes. Because of irregularities of terrain, these theoretical times will only approximate the rising and setting times observed on land. The rising and setting times given in these tables refer to the appearance and disappearance (respectively) of the upper limb of the Sun as observed at sea level on a refracted (apparent) sea horizon.
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