Secular Holidays
A calendar of meaningful observances for people living without religion — from Darwin Day to HumanLight, Cosmos Night to Winter Solstice.
Why a secular calendar matters
Religions are, among other things, calendars. They give the year a shape — weekly services, high holy days, seasonal fasts and feasts. When families leave religion, they often discover that the sermons and doctrines were the easy part to let go of. The harder loss is the rhythm: the marked days, the shared rituals, the sense that the year is going somewhere. A secular calendar does not try to reproduce religion’s supernatural claims. It tries to recover what families actually need from a calendar — anchors, anticipation, togetherness — without asking anyone to believe things they don’t.
What follows is a practical, non-exhaustive calendar. Nothing here is mandatory. The point is to offer enough options that a secular household can pick a handful of anchors that actually mean something to its members.
Darwin Day — February 12
Darwin Daymarks Charles Darwin’s birthday in 1809 and celebrates evolutionary science and rational inquiry. It has been observed since the 1990s and is now marked by universities, museums, and humanist organizations worldwide. Typical observances: a “Phylum Feast” (a meal with dishes from different branches of the tree of life), a museum visit, or reading a chapter of On the Origin of Species with the kids. It works particularly well for families whose children are curious about dinosaurs, animals, or the deep history of life.
Pi Day and the National Day of Reason — March 14 and first Thursday of May
Pi Day (March 14, or 3/14) has quietly become one of the most-observed secular holidays, especially in schools. It is light, useful for math enrichment, and comes with an obvious culinary tradition (pie). The Day of Pi is one of the rare observances that works from primary school through graduate seminars.
The National Day of Reason, held on the first Thursday of May in the US, was created in 2003 by the American Humanist Association as a secular alternative to the National Day of Prayer. It is a day for public events defending church–state separation and celebrating evidence-based public policy.
Space dates — April 12 and July 20
Yuri’s Night(April 12) marks Yuri Gagarin’s 1961 first human spaceflight and, coincidentally, the first Space Shuttle launch in 1981. It has been observed since 2001 with parties in dozens of countries. The Apollo 11 Anniversary (July 20) commemorates the 1969 moon landing. Both are gentle, family-friendly observances for families that prefer a cosmic-scale frame. They pair well with a planetarium visit or a backyard stargaze.
Cosmos Night is a more recent addition, held informally on variable dates by astronomy clubs and science-museum groups. Some communities time it to a meteor shower (Perseids in August, Geminids in December). The ritual is simple: gather outside, look up, talk about what you are seeing.
Carl Sagan Day and Einstein’s Birthday
Carl Sagan Day (November 9, Sagan’s birthday) has been observed by humanist and freethought groups since 2009. It is one of the warmer secular observances — less about argument, more about wonder. Typical activities: watching an episode of Cosmos, reading from Pale Blue Dot, or teaching a child the basic structure of the solar system.
Albert Einstein’s birthday(March 14 — conveniently identical with Pi Day) is sometimes folded into the same observance. Together, the two make a coherent spring anchor around mathematical and scientific imagination.
HumanLight — December 23
HumanLightwas created in 2001 by the New Jersey Humanist Network as a deliberate secular alternative to the December religious holidays. It is held on December 23 and centres on three themes: reason, compassion, and hope. Typical observances: candle lighting (three candles representing the themes), a family meal, gift exchange, and readings from secular humanist writers. Unlike most items on this list, HumanLight was consciously designed as a holiday. For families that want a December anchor that is not Christmas — or that want something alongside a secularized Christmas — it is the cleanest option.
Earth Day, solstices, and equinoxes — April 22 and quarterly
Earth Day(April 22), observed since 1970, is the largest secular observance in the world, marked in over 190 countries. It gives a calendar anchor to environmental concern — fitting, since the Earth is the one thing secular and religious traditions agree actually exists.
The solstices (around June 21 and December 21) and equinoxes(around March 20 and September 22) are older than any religion. Many families mark the winter solstice as a nature-based alternative to Christmas — the observance that Christmas itself was originally grafted onto. A simple practice: light candles at sunset on the longest night, note that the days now start lengthening, and eat something warm.
Adapting Christmas, Easter, and Thanksgiving
Most secular families do not abandon the major cultural holidays; they secularize them. This is not a compromise so much as recognition that Christmas trees, egg hunts, and Thanksgiving tables were always only loosely religious at their cultural core.
Christmascan be kept as a family gathering, gift exchange, and end-of-year reset — with the theology optional. Many nones pair it with a winter solstice observance to acknowledge that the season’s meaning is pre-Christian. Easter can be reframed as a spring-renewal holiday: eggs, chicks, flowers, and the first properly warm weekend. Thanksgiving(US and Canadian versions) is already essentially secular — a harvest meal with an explicit practice of gratitude, which secular psychology strongly endorses on non-religious grounds.
For households moving from religious to non-religious observance gradually, the trick is not all-or-nothing. Keeping the tree and the turkey while dropping the doctrine is a perfectly respectable approach, and it maintains the continuity with extended family and culture that abrupt breaks tend to damage.
Building your own calendar
A minimal secular calendar might look like this: Darwin Day (February 12), Pi Day (March 14), Earth Day (April 22), a solstice observance in June, Apollo 11 Anniversary (July 20), Carl Sagan Day (November 9), HumanLight (December 23), and a winter solstice gathering. Eight anchors, enough to give the year shape, light enough to adapt to any household. Add family birthdays, personal remembrance days, and whatever cultural holidays you still value, and you have a calendar that carries more than most religious households manage, without requiring belief in anything that isn’t there.
For the deeper philosophical frame, see secular humanism. For the demographic context — why so many families are now building calendars like this in the first place — see the Nones.
Continue exploring
Darwin Day
February 12 — the secular observance honouring Charles Darwin and evolutionary inquiry.
Secular humanism
The philosophical tradition behind most modern secular observances.
Secular parenting
Raising children without religion — including how to give the year meaningful shape.
Atheism
What atheism actually is, what atheists believe, and common misconceptions.
Carl Sagan
The astronomer and science communicator whose November 9 birthday anchors a warmer corner of the secular calendar.