April30 days. Aries to the 19th, Taurus from the 20th. Next: go to Days 1 to 30 and spin the day.
August31 days. Leo to the 22nd, Virgo from the 23rd. Next: go to Days 1 to 31 and spin the day.
December31 days. Sagittarius to the 21st, Capricorn from the 22nd. Next: go to Days 1 to 31 and spin the day.
February28 days, or 29 in a leap year such as 2028. Aquarius to the 18th, Pisces from the 19th. Next: go to Days 1 to 29 (February) and spin the day. A 29th makes a leap-day birthday: keep it or spin again.
January31 days. Capricorn to the 19th, Aquarius from the 20th. Next: go to Days 1 to 31 and spin the day.
July31 days. Cancer to the 22nd, Leo from the 23rd. Next: go to Days 1 to 31 and spin the day.
June30 days. Gemini to the 20th, Cancer from the 21st. Next: go to Days 1 to 30 and spin the day.
March31 days. Pisces to the 20th, Aries from the 21st. Next: go to Days 1 to 31 and spin the day.
May31 days. Taurus to the 20th, Gemini from the 21st. Next: go to Days 1 to 31 and spin the day.
November30 days. Scorpio to the 21st, Sagittarius from the 22nd. Next: go to Days 1 to 30 and spin the day.
October31 days. Libra to the 22nd, Scorpio from the 23rd. Next: go to Days 1 to 31 and spin the day.
September30 days. Virgo to the 22nd, Libra from the 23rd. Next: go to Days 1 to 30 and spin the day.
Show all 43 months and days (31 more)
Days 1 to 29 (February) 29
1stEvery month has a 1st. No star sign changes this early in a month, so the sign is the one the month opened with: 1 June is Gemini, 1 November is Scorpio.
2ndEvery month has a 2nd. No star sign changes this early in a month, so the sign is the one the month opened with: 2 November is Scorpio, 2 April is Aries.
3rdEvery month has a 3rd. No star sign changes this early in a month, so the sign is the one the month opened with: 3 April is Aries, 3 September is Virgo.
4thEvery month has a 4th. No star sign changes this early in a month, so the sign is the one the month opened with: 4 September is Virgo, 4 February is Aquarius.
5thEvery month has a 5th. No star sign changes this early in a month, so the sign is the one the month opened with: 5 February is Aquarius, 5 July is Cancer.
6thEvery month has a 6th. No star sign changes this early in a month, so the sign is the one the month opened with: 6 July is Cancer, 6 December is Sagittarius.
7thEvery month has a 7th. No star sign changes this early in a month, so the sign is the one the month opened with: 7 December is Sagittarius, 7 May is Taurus.
8thEvery month has a 8th. No star sign changes this early in a month, so the sign is the one the month opened with: 8 May is Taurus, 8 October is Libra.
9thEvery month has a 9th. No star sign changes this early in a month, so the sign is the one the month opened with: 9 October is Libra, 9 March is Pisces.
10thEvery month has a 10th. No star sign changes this early in a month, so the sign is the one the month opened with: 10 March is Pisces, 10 August is Leo.
11thEvery month has a 11th. No star sign changes this early in a month, so the sign is the one the month opened with: 11 August is Leo, 11 January is Capricorn.
12thEvery month has a 12th. No star sign changes this early in a month, so the sign is the one the month opened with: 12 January is Capricorn, 12 June is Gemini.
13thEvery month has a 13th. No star sign changes this early in a month, so the sign is the one the month opened with: 13 June is Gemini, 13 November is Scorpio.
14thEvery month has a 14th. No star sign changes this early in a month, so the sign is the one the month opened with: 14 November is Scorpio, 14 April is Aries.
15thEvery month has a 15th. No star sign changes this early in a month, so the sign is the one the month opened with: 15 April is Aries, 15 September is Virgo.
16thEvery month has a 16th. No star sign changes this early in a month, so the sign is the one the month opened with: 16 September is Virgo, 16 February is Aquarius.
17thEvery month has a 17th. No star sign changes this early in a month, so the sign is the one the month opened with: 17 February is Aquarius, 17 July is Cancer.
18thEvery month has a 18th. No star sign changes this early in a month, so the sign is the one the month opened with: 18 July is Cancer, 18 December is Sagittarius.
19thEvery month has a 19th. Pisces begins on 19 February. The other eleven months are still on the sign they opened with. A start can move by a day between years, so check an edge birthday against its year.
20thEvery month has a 20th. Aquarius begins on 20 January and Taurus on 20 April. One month has already changed sign and nine are still on the sign they opened with. A start can move by a day between years, so check an edge birthday against its year.
21stEvery month has a 21st. Aries begins on 21 March, Gemini on 21 May and Cancer on 21 June. Three months have already changed sign and six are still on the sign they opened with. A start can move by a day between years, so check an edge birthday against its year.
22ndEvery month has a 22nd. Sagittarius begins on 22 November and Capricorn on 22 December. Six months have already changed sign and four are still on the sign they opened with. A start can move by a day between years, so check an edge birthday against its year.
23rdEvery month has a 23rd. Leo begins on 23 July, Virgo on 23 August, Libra on 23 September and Scorpio on 23 October. Eight months have already changed sign. A start can move by a day between years, so check an edge birthday against its year.
24thEvery month has a 24th. All twelve signs have changed over by now, so the sign is the one that began this month: 24 January is Aquarius, 24 June is Cancer.
25thEvery month has a 25th. All twelve signs have changed over by now, so the sign is the one that began this month: 25 June is Cancer, 25 November is Sagittarius.
26thEvery month has a 26th. All twelve signs have changed over by now, so the sign is the one that began this month: 26 November is Sagittarius, 26 April is Taurus.
27thEvery month has a 27th. All twelve signs have changed over by now, so the sign is the one that began this month: 27 April is Taurus, 27 September is Libra.
28thEvery month has a 28th. All twelve signs have changed over by now, so the sign is the one that began this month: 28 September is Libra, 28 February is Pisces.
29thEleven months have a 29th every year. February has one only in a leap year: 2024 had one and 2028 is next. Landed here for February? Keep the leap-day birthday or spin again.
Days 1 to 30 1
30thEleven months have a 30th; February never does. It is the last day of April, June, September and November.
Days 1 to 31 1
31stSeven months have a 31st: January, March, May, July, August, October and December. It is in Days 1 to 31 only.
How this list was compiled: Calendar facts, own arrangement: twelve months and the day numbers 1 to 31, grouped so that each group holds only the days a month of that length has. Month lengths are those of the Gregorian calendar. The leap year rule (every fourth year, century years only when they divide by 400; 2024 had a 29 February and 2028 is next) follows https://en.wikipedia.org/wiki/February_29 (checked 2026-09-18). The star sign named for each part of a month is the tropical zodiac column of the table at https://en.wikipedia.org/wiki/Zodiac (checked 2026-09-18), the same dates this site's zodiac sign wheel uses; that page says the exact dates move by up to a day from year to year, which the notes on the 19th to the 23rd repeat. Signs are given as dates only, with no personality text. Licence: own work
How it works
This wheel of birthdays holds the twelve months and the days 1st to 31st. Press Spin the wheel. Birthdays take two spins: a month first, then the button reads Spin the day and draws only days the month has. Nobody is born on 31 April.
Read the full guide
Two spins make one date
The birthday wheel spinner opens on the twelve months. Say April lands. The card reads 30 days, Aries to the 19th, Taurus from the 20th, and points to Days 1 to 30. Press Spin the day: the 14th. 14 April, an Aries. February's days stop at 29, and a 29th there is a leap-day birthday. Copy results hands back both; for another birthday, choose Months under Show only.
Why 14 February beats 14 January
Every time you press Spin the wheel, birthday months get one chance in twelve each, so dates in short months come up more often. 14 February lands once in 348 pairs of spins (12 times 29), 14 January once in 372 (12 times 31). On a real calendar each date sits near one in 365 and 29 February near one in 1,461: four years hold 1,461 days and one leap day. This wheel deals a leap day about four times too often. One wheel of all 366 dates would fix the short months but not the leap day.
At a birthday, spin the wheel as a guessing game: everyone calls a month before the spin, and whoever is right picks the next game.
For a cast, spin every month first in Elimination, so no two characters share one, then switch to Normal for the days.
Landed on 29 February? Decide whether the character celebrates on 28 February or 1 March in other years.
Questions and answers
Is this birthday spinner wheel fair?
To the months, yes: each has one chance in twelve. The dates are less even, as the sums above show. A repeated birthday is no fault: among 23 people a shared one is more likely than not, at about 51 percent.
Which star sign goes with the date?
The month card names both signs and the day the second one starts. The 19th to 23rd cards list the signs starting that day. A start can shift by a day between years, so check an edge birthday against its year on the zodiac wheel.
Can this birthday generator add a birth year?
Yes, in one more spin. The wheel of years gives one year from 1900 to 2029 and says whether it is a leap year. If February came up, spin the year before the day: 1900 had no leap day and 2000 had one.