| U.S. Naval Observatory | Astronomical Applications Department |
This page provides a way for you to obtain a table of the times of sunrise/sunset, moonrise/moonset, or the beginning and end of twilight, for one year. Simply specify the year, the type of table, and place below and click on the "Compute Table" button. The table will provide the data requested in local standard time on a 24-hour clock; for example, 1836 means 6:36 p.m., local standard time.
The place name you enter must be a city or town in the U.S. The place's location will be retrieved from a file with over 22,000 places listed. Either upper- or lower-case letters or a combination can be used. Spell out place name prefixes, as in "East Orange", "Fort Lauderdale", "Mount Vernon", etc. The only exception is "St.", which is entered as an abbreviation with a period, as in "St. Louis".
For information on the definitions of rise, set, and twilight, see Rise, Set, and Twilight Definitions in FAQ.
The table is 134 characters wide, so to print it, you will have to use landscape orientation and 8-point type. The best scheme is to save the table to a file on your computer (for example, in Netscape, click on File then Save As...), then use your own favorite word processor to print it.
The times of the phenomena are presented in the standard time of the place requested, using the current time zone of the place. Standard time in time zones was introduced in the U.S. in 1883, but the time zone boundaries have evolved considerably since then, with places shifting from one zone to another. There is no attempt here to track such changes.
Daylight time is not implemented in this program. When daylight time is in use, add one hour to the times listed in the table.
Need other kinds of astronomical information? Start at our home page.
