December Social Media Holidays — Free Tool
Every social media holiday in December, with the rule behind each moveable date and one honest line on whether a brand should post about it at all.
Schedules are usually finished by mid-December; keep the day itself light.
A major sale day in the UK, Canada, Australia and New Zealand.
Year-in-review recaps and countdown posts; schedule them, do not staff them.
21 or 22 December in the northern hemisphere; the summer solstice in the southern.
Shortest-day and light-themed creative heading into the holidays.
Set by the Hebrew calendar; usually late November to late December, lasting eight nights.
Eight nights of content if you plan it; do not fold it into Christmas creative.
Dates marked "Movable" shift every year — always confirm the exact day against a current calendar before you schedule anything. Observances also vary by country: several of these are national or regional, and some are marked on different dates elsewhere. Treat this as a planning prompt, not authoritative scheduling data.
Features
- The calendar opens filtered to December, in date order, with the search box still live
- 3 fixed dates plus the moveable ones, which show the rule that sets them instead of an invented date
- One line per date on what brands actually post, and whether the date is worth a post at all
- An honest read on which December dates matter (Christmas, Hanukkah and New Year's Eve) and which are filler
- Links to November and January, and back to the full twelve-month calendar
Frequently asked questions
Which December social media holidays are actually worth posting about?
Christmas, Hanukkah and New Year's Eve are the December dates with real audience attention behind them, and they are worth planning properly. Most of the rest are invented awareness days: a marketer registered them, and posting about one mainly signals that the account had nothing of its own to say. For December our advice is to skip Boxing Day unless the day is genuinely your subject. Two posts you would have made anyway beat ten borrowed from a list.
Which December dates move each year?
Hanukkah is set by the Hebrew calendar and usually falls between late November and late December across eight nights, and the solstice is 21 or 22 December in the northern hemisphere. This page describes the rule that fixes each one rather than printing a date, because a calendar that confidently prints the wrong day for a moveable holiday is worse than no calendar at all. Confirm the exact day against a current calendar before you schedule anything.
How far ahead should I plan December content?
Four to six weeks covers most December dates: long enough to brief creative, get approvals and build the supporting email. Most December schedules are finished by mid-December so nobody is publishing on the day itself. Anything involving paid media or stock needs longer.
Where are the other months?
Every month has its own page. The previous one is November and the next is January. The full twelve-month calendar lists all sixty dates in one place with search and month filters, and there is a separate 2027 planning page if you are building a whole year at once.
