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HKO Almanac 2025 Index

The "Hong Kong Observatory Almanac 2025" contains the following information:

(i) traditional Chinese calendar;
(ii) solar terms and moon phases;
(iii) times of daily sunrise, sun transit, sunset, moonrise, moon transit, moonset;
(iv) times and height of high and low tides;
(v) times of meridian passage, rising and setting of the sun and planets in the form of graph;
(vi) paths of the Sun throughout the year;
(vii) quarterly star maps of the year;
(viii) duration of twilight in Hong Kong before sunrise and after sunset;
(ix) determination of apparent solar time;
(x) time zones of selected cities worldwide; and
(xi) information on solar and lunar eclipses and observation of meteor showers and planetary phenomena.

It also contains background information on calendars and the 24 solar terms.

As a green initiative to reduce paper consumption and to optimize readers’ experience, we have ceased publishing the printed version of the "Hong Kong Observatory Almanac".