What is the Lucky Day Calendar?
The Lucky Day Calendar is a free tool for spotting son-eomneun-nal — Korea's ghost-free days on the lunar 9th, 10th, 19th, 20th, 29th, and 30th — directly on a monthly calendar. Every solar date carries its lunar date in small print, and ghost-free days are badged automatically, so there is no need to leaf through a lunar almanac and work out dates by hand. You can browse 111 years, from January 1940 to December 2050.
Below the calendar, the next 10 ghost-free days from today are listed with their weekday, lunar date, and a D-day countdown — handy for shortlisting candidate dates before requesting moving quotes or touring wedding venues. The month you are viewing can be shared as a link (?ym=year-month), so family and friends can look at the same screen while deciding on a date.
Key features
Solar + lunar combined calendar
Every date in the monthly grid shows its lunar date in small print. Leap months are marked with an "L", which also helps when tracking lunar birthdays or memorial rites.
Automatic ghost-free highlights
Days falling on the lunar 9th, 10th, 19th, 20th, 29th, and 30th are found and badged automatically. Today's date is outlined so you never lose your place.
Countdown to the next lucky days
The 10 nearest ghost-free days from today are listed with weekday, lunar date, and D-day. Tapping an item jumps straight to that month's calendar.
1940-2050 range with shareable links
Browse 111 years — from checking a past lunar date to scouting wedding candidates years ahead. The share button copies a link to the month you are viewing.
How to use
- Look for badged dates on the calendar. The current month opens by default, with badges on ghost-free days and an outline on today's date.
- Use the previous and next buttons to navigate. Any month from January 1940 to December 2050 is available, and a ?ym= value in the URL jumps straight to a specific month.
- Scan the list below the calendar for D-days. The next 10 ghost-free days appear with their weekday and lunar date, making planning easy.
- Copy a link to the month with the share button. Send it to your moving company or family and they will see the very same calendar.
Great moments to use it
Before booking a move
Shortlist two or three ghost-free candidate dates before requesting moving quotes. Among equally lucky days, weekdays are easier to book and usually cheaper than weekends.
Coordinating wedding dates
Sharing the lucky-day list with both families speeds up the conversation when elders weigh in on the date. The built-in countdown also helps gauge how much preparation time remains.
Choosing an opening or signing day
Consult it when dating a store opening, company founding, or lease signing. Seeing the whole month at a glance makes it easy to pick a day that avoids conflicts.
Tracking lunar anniversaries
With lunar dates printed on every day, it doubles as a tool for memorial rites, lunar birthdays, and family anniversaries. Years with a leap month are marked precisely with an "L".
Frequently asked questions
Which days exactly are ghost-free days?
Days whose lunar date ends in 9 or 0 — the lunar 9th, 10th, 19th, 20th, 29th, and 30th. They come around five or six times per lunar month. This calendar computes the lunar date for every day automatically and badges the matching ones, so no manual counting is needed.
Why do Koreans prefer these days for moving?
Tradition holds that "son" — wandering spirits that meddle in human affairs — ascend to the heavens on these days, leaving the earth clear for big undertakings. Today it survives more as custom than belief, yet demand is still high enough that moving companies charge a premium on these dates.
Is it bad luck to move on an ordinary day?
Not at all. Ghost-free days are a long-standing folk custom, not something with scientific grounding. In fact, avoiding them often means cheaper moving fees and easier booking for your preferred time slot. Choose whichever gives your family the most peace of mind.
The lunar date here differs from another calendar by a day.
This calendar computes lunar dates from a widely verified astronomical table. Because the new-moon instant can fall on different days depending on which standard time is used, lunar calendars occasionally differ by one day between countries and institutions. For important events such as weddings, please also check the official calendar of the Korea Astronomy and Space Science Institute.
What are the spirit directions?
They are the compass directions the spirits were believed to occupy by lunar date: east on the 1st-2nd, south on the 3rd-4th, west on the 5th-6th, north on the 7th-8th, and none at all on the 9th-10th when they rise to the sky. Hence the compromise custom that even on ordinary days, you were safe as long as you avoided the occupied direction.
Do leap months have ghost-free days too?
Yes. This calendar applies the same rule (lunar dates ending in 9 or 0) within leap months and marks their dates with an "L". Interestingly, tradition regards the entire leap month as a "bonus month" free of spirits, which is why tasks like preparing burial garments or relocating graves are sometimes scheduled deliberately in a leap month.
How far can I browse?
From January 1940 to December 2050 — 111 years in total. That covers everything from converting your parents' lunar birthdays into solar dates to scouting wedding candidates several years ahead, all in one tool.
Can I share a specific month with my family?
Yes. Pressing the share button copies a link containing the month you are viewing (?ym=year-month). Anyone who opens it lands on the exact same monthly calendar, which makes coordinating with movers or discussing dates with family effortless.
Privacy
The Lucky Day Calendar is a lookup tool that asks for no personal information at all. Every calendar and lunar-date computation happens inside your browser; nothing is sent to or stored on a server. It is free to use without any sign-up, and shared links contain nothing beyond the viewed month (?ym=).