Lunar calendar

Historical origin

The lunar calendar is the oldest humanity has known. The word "month" derives in many languages from the word "moon" (Latin mensis, English moon/month, German Mond/Monat). The synodic lunar cycle lasts 29.5 days, which gave the rhythm to the first agricultures, fisheries and religious rituals.

The Hebrew, Islamic, traditional Chinese, Buddhist and many other calendars are based on lunations. The original Roman calendar was lunar; Julius Caesar changed it to solar (Julian calendar) in 46 BC, later reformed by pope Gregory XIII in 1582 (Gregorian calendar, the one we use today). But the Moon never stopped marking the emotional, agricultural and ritual rhythm of human life.

The four phases

New moon: beginning, intention, seeds. Waxing crescent: action, effort, construction. Full moon: culmination, manifestation, clarity. Waning crescent: closure, release, integration. Each phase lasts approximately 7 days. Between phases there are sub-moments: the waxing moon covers from new to full; the waning, from full to new.

In addition to phase, the sign where the Moon is matters: it changes every 2-3 days. Moon in Aries: days of initiative and action. Moon in Taurus: days for material matters and sensorial enjoyment. Moon in Gemini: communication, meetings. And so with all twelve. Combining phase + sign gives a compass of the emotional weather of each day — useful for planning.

Practical application

Agricultural and popular tradition uses the lunar calendar for many decisions: waxing moon for sowing, cutting hair if you want it to grow fast, starting treatments. Waning moon for harvesting, depilation so hair grows weaker, breaking habits, doing purging diets. Modern esoteric tradition uses the new moon for manifestation rituals and the full moon for manifestation or release rites.