Date Selection

Good Days For

Some decisions hold better on some days than others. Pick what you are planning and read how the Four Pillars almanac and Western electional astrology each answer the timing question.

What are you planning?

Sign a contractContracts hold when the words stay fixed. The days below favor commitments that should last — clear communication planets, a moon that isn't mid-swing, a day ruler that witnesses the signature.
Launch a businessLaunches want momentum. A waxing or full moon adds public energy; a Mars that's direct keeps initiative crisp; a Tuesday (Mars) or Sunday (Sun) ruler reads as visible beginnings.
Get marriedWeddings favor a Venus direct (relating smoothly), a moon in an Earth or Water sign (rooted or deep), and a Friday (Venus) — classical wedding ruler. Mercury retrograde is survivable but adds paperwork risk to the legal side.
Move homeMoving day favors a moon grounded in an Earth sign, a Saturday (Saturn — stability) or Monday (Moon — home), and Mercury direct for paperwork. A void-of-course moon is worth avoiding on the signing-of-lease day even if the physical move is logistically fine.
Take an important meetingMeetings that need clean communication favor a Wednesday (Mercury) or Thursday (Jupiter — expansion, persuasion), Mercury direct, and a moon in an Air sign for receptive listening.
Have a difficult conversationHard talks land when the room stays soft. Favor a moon in Water for emotional honesty, a Wednesday (Mercury) for direct speech, and Mars direct so the conversation doesn't stall. Avoid the new moon — tenderness isn't fully available.
TravelThe start of a trip favours a Wednesday (Mercury — movement, messages) or Sunday (Sun — confident departures), Mercury direct so itineraries hold, and a moon that isn't void of course on the morning you leave. A waning moon is fine for returns; a waxing moon adds momentum to outbound trips.
Close on a houseThe paperwork side of buying property — distinct from the move itself. Favour Mercury direct (signatures hold), a Saturn day (Saturday, the keeper) or Wednesday (Mercury, the messenger), and a moon in Earth for grounded permanence. Avoid Mercury or Venus retrograde — money + paperwork both want a forward-moving sky.
Get a haircutFolk tradition treats a waxing moon as the time to cut for growth (it grows back fuller) and a waning moon for length-loss (it stays shorter). A Friday (Venus) is the classical aesthetic day; avoid a void-of-course moon — the cut just doesn't sit right. Tung Shing and Vedic Mundan traditions both rank haircuts by lunar day.
Start a dietNew intentions take root at a new moon — the classical 'set the seed' window. A Tuesday (Mars — discipline) or Saturday (Saturn — restraint) anchor the resolve. Avoid full-moon launches (cravings spike) and Venus retrograde (the relationship with pleasure is sideways).
Start a fitness routineBegin where Mars can push — a Tuesday (Mars, the athlete), Mars direct, and a waxing moon for building momentum. The new-moon-for-intentions rule applies too: starting on a new moon gives the cycle a clean ignition. Avoid a Mars-retrograde launch — the discipline stalls before week three.
Go on a first dateFriday is Venus's day for a reason — relating, beauty, dinner. A moon in Taurus, Cancer, or Pisces softens first meetings; an Air moon (Gemini, Libra) keeps conversation moving. Avoid Venus retrograde — old patterns intrude — and a void-of-course moon late in the evening, when the night just doesn't land.
Propose marriageThe asking is distinct from the wedding — the question wants Venus warmth (Friday, or a moon in Taurus/Libra/Pisces) and Mercury direct so the words come out as you mean them. A waxing moon adds 'yes' momentum. Venus retrograde returns to old relationships — postpone if you can.
Buy a carBig purchases live where Venus (value) meets Mercury (negotiation). Friday for Venus, Wednesday for Mercury. A waxing moon adds 'this is a step up' energy; Venus retrograde is the classic 'wait two weeks' window for any vehicle or beauty purchase. Earth moons (Taurus, Virgo, Capricorn) ground the decision.
Take a job interviewInterviews favour a Mercury day (Wednesday) or a Jupiter day (Thursday — luck, expansion). A waxing moon presents you as growing; an Air moon (Gemini, Libra, Aquarius) keeps conversation crisp. Mercury retrograde is forgivable for follow-ups but stings on first-impression days.
Ask for a raiseAsks land best on a Thursday (Jupiter — abundance) or Friday (Venus — value, money). A waxing-toward-full moon adds 'I am worth this' charge. Mercury direct so the words come out clean. Avoid Venus retrograde — the conversation about money goes sideways.
Speak publiclySpeeches, presentations, performances — Mercury for clarity (Wednesday), Sun for stage presence (Sunday). A waxing or full moon amplifies projection. Air moons (Gemini, Libra, Aquarius) give a generous audience. Mercury retrograde is the classic 'rehearse three more times' warning.
Have a hard conversation at workDistinct from a personal conversation — workplace honesty needs structure. Favour Saturday (Saturn — the structural truth) or Wednesday (Mercury — direct words). A waning moon supports closure rather than escalation. Mars retrograde is the 'don't trigger a fight' warning; Mercury retrograde turns plain words into misread ones.
Take an examTests live in Mercury's territory — Wednesday for sharp recall, Mercury direct so memory holds. A waxing or full moon supports the climb; an Air moon keeps thinking clear. The Mars-retrograde caution is for physical exams (driving tests, fitness tests); for written tests, focus on Mercury and Moon.
HireHiring is Mercury's domain — interviews, reference checks, written offers. A Wednesday (Mercury) or Thursday (Jupiter — building a team) positions the day well. Mercury direct keeps verbal agreements solid and offer letters unambiguous. A waxing moon says you're growing something. Air moons (Gemini, Libra, Aquarius) help both sides actually hear each other rather than talk past each other.
Launch a productA product launch needs visibility and staying power. Sunday (Sun — public reach, confidence) or Tuesday (Mars — initiative, getting off the ground) sets the right tone. Mars direct keeps the rollout from stalling mid-runway. A full or waxing moon catches the moment at a point of amplification. Mercury direct is insurance for press copy that says what you meant it to say.
Negotiate a dealDeals live in Mercury's house — precision, fast reads, the right word at the right moment. A Wednesday keeps the planet of contracts in the room with you. Mercury direct stops the clause you both agreed on from meaning something different by morning. A waxing moon keeps the balance of power moving forward. Air moons (Gemini, Libra) sharpen the back-and-forth without letting it turn adversarial.
Make an investmentInvestment timing favors Jupiter (Thursday — foresight, abundance) and an Earth moon for decisions made with a cool head rather than a racing one. A waxing moon says the tide is coming in. Venus retrograde distorts perceived value across any asset class — real estate, equities, private placements. Mercury retrograde creates paperwork risk: missed terms, misread prospectuses, stalled wire transfers.
Starting a New JobThe best days to start a new job in 2027 according to BaZi and Western astrology. Auspicious start pillars, waxing moon, Jupiter support — set the right tone on day one.

Each guide reads the classical almanac alongside Western electional rules — moon phase, day ruler, and the retrogrades that matter for that particular decision. For windows calculated against your own chart rather than the general sky, read your own days.