全部有官方來源
年鑑 / Yearbook
1864 年香港
Hong Kong in 1864
1864 年嘅大事、當年成立嘅機構、當年數字同當年氣候，全部有來源同時點。氣候數據由天文台開放數據 API 逐日抓取後按年點算，所以每一年都用同一把尺。
Events, institutions founded, figures and climate for 1864 — each with a source and a reference date. Climate values are computed from the Observatory daily open-data series, so every year is measured with the same ruler.
日期式里程碑
人口、經濟、社會
大事
Events recorded for 1864
- 1864年1864
開埠與條約 / Port and treaties
寄信必須使用郵票 / Stamps made compulsory on letters
香港郵政：1864 年起，政府規定寄信時必須使用郵票。
Hongkong Post: from 1864 the government required stamps to be used on letters.
來源 / Source: 香港郵政：歷史
當年成立／開始
Institutions and services that began in 1864
本站年鑑未有呢一年嘅機構成立紀錄。 No founding milestone is recorded for this year.
當年數字
Figures with a reference date in 1864
呢一年未有已核對嘅統計數字。人口、經濟等長期序列會逐步補上。 No verified figure is held for this year yet; long-run series are being added.
當年氣候
Climate recorded for 1864
天文台逐日數據未覆蓋呢一年（通常係 1885 年之前，或者該年可用日數少於 300 日）。 Observatory daily data does not cover this year — either before 1885 or fewer than 300 usable days.
相關問題
Verified questions citing figures dated 1864
呢一年嘅數字暫時未被 /questions 內嘅問題引用。 No curated question cites this year’s figures yet.
來源
Sources
- 香港郵政：歷史 / Hongkong Post: history · 香港郵政