Here is a page listing and charting both Sunrise and Sunset times for every
day of the year. You can search month by month and down load the data.
Twilight Times (Morning and Evening)
The report lists twilight times for both morning and evening for each
day in the report. The morning twilight times appear on the left and
the evening twilight times appear on the right. There are three
separate twilight times listed for each:
Astronomical Twilight: (Astro) is defined as the time at which the
center of the sun is 18° below the horizon. At this time, stars and
planets of sixth magnitude are visible directly above and generally
there is no trace of twilight glow on the horizon. It’s the time of
complete darkness without an artificial light source.
Nautical Twilight: (Naut) is defined as the time at which the
center
of the sun is 12° below the horizon. Distinguishing the outlines of
objects on the ground is impossible past this point toward darkness,
thus it marks the point at which navigation is impossible without an
artificial light source.
Civil Twilight: (Civil) is defined as the time at which the
center of the sun is 6° below the horizon. At this time, stars
and planets of first magnitude are visible and suspension of outdoor
activities is required without artificial lighting. Civil twilight is
roughly 30 minutes long during the equinox.
Sunrise:
The report lists the time at which sunrise (defined as the time at
which the upper limb of the sun appears) occurs for each day in the
report.
Sunset:
The report lists the time at which sunset (defined as the time at
which the upper limb of the sun disappears) occurs for each day in the
report.
Daylight Hours:
The report shows the total hours of daylight for each day in the
report
