The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Foo Fizz Buzz Bar in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 641st kg583 🇺🇸 917 109 12ms 17 Oct 2025 642nd m-tkach 🇺🇦 917 123 26ms 21 Aug 2023 643rd tuffnatty 🇩🇪 917 126 4ms 17 Jul 2023 644th nwellnhof 🇩🇪 916 66 3ms 5 Dec 2021 645th nwellnhof 🇩🇪 916 106 3ms 12 Jun 2022 646th primo-ppcg 🇹🇭 916 120 22ms 23 Nov 2021 646th AlephSquirrel 916 120 23ms 5 Feb 2024 646th CLOStrophobic 🇮🇹 916 120 22ms 18 Jan 2025 649th Liibe 916 136 462ms 25 Sep 2025 650th Steffan153 🇫🇮 915 104 97ms 16 Oct 2022 651st Steffan153 🇫🇮 915 105 4ms 19 Aug 2024 652nd pardouin 🇫🇷 915 109 3,906ms 31 Oct 2024 652nd emgordon154 915 109 4,358ms 31 Oct 2024 654th pardouin 🇫🇷 915 116 466ms 17 Aug 2024 655th Lydxn 🇨🇦 913 71 280ms 19 Jul 2022 656th alemelis 913 78 435ms 20 Sep 2024 657th SteveHales 913 93 89ms 19 Sep 2025 658th janbehrens 🇩🇪 912 105 130ms 5 Mar 2022 658th alomiF 912 105 132ms 30 Aug 2023 660th emgordon154 911 85 10ms 22 Nov 2021 660th itsh01 911 85 10ms 25 Nov 2021 660th nathanadams 🇳🇿 911 85 10ms 16 Apr 2023 660th dmrichwa 🇺🇸 911 85 10ms 6 Aug 2024 660th ovs-code 🇩🇪 911 85 10ms 17 Nov 2024 660th Salutations45 911 85 9ms 27 Nov 2024 660th attila8192 911 85 9ms 20 Jul 2025 667th btnlq 911 95 14ms 9 Dec 2021 668th GrayJoKing 🇦🇺 911 112 2ms 16 Jul 2024 669th Steffan153 🇫🇮 910 82 130ms 8 Aug 2024 669th sean-niemann 🇺🇸 910 82 131ms 8 Aug 2024 669th rucin93 🇵🇱 910 82 129ms 9 Aug 2024 672nd peterprescott 910 90 11ms 22 Nov 2021 672nd Fishron 910 90 10ms 24 Nov 2021 672nd knutae 🇳🇴 910 90 11ms 25 Nov 2021 672nd RDShah 910 90 12ms 25 Nov 2021 672nd sbr075 910 90 11ms 7 Dec 2021 672nd CedricGebistorf 910 90 11ms 24 Feb 2022 672nd hiichbindermax 910 90 10ms 26 Feb 2022 672nd LHuitre 910 90 11ms 15 Apr 2022 672nd alex-costea 910 90 11ms 15 Apr 2022 672nd Indivicivet 910 90 10ms 9 May 2022 672nd AGoyet 910 90 10ms 11 Jul 2022 672nd galloj 🇨🇿 910 90 11ms 16 Aug 2022 672nd Yareeeema 910 90 10ms 18 Aug 2022 672nd jfallon1997 910 90 11ms 6 Sep 2022 672nd MaxElf999 910 90 12ms 3 Oct 2022 672nd TheBlupper 910 90 11ms 3 Oct 2022 672nd ValentinCassayre 910 90 12ms 9 Oct 2022 672nd Omega65536 🇩🇪 910 90 11ms 22 Nov 2022 672nd jacksonhenry3 910 90 11ms 2 Dec 2022 672nd Techdude01 910 90 10ms 17 Dec 2022 672nd M0PKOBKA 910 90 12ms 26 Dec 2022 672nd NOS4A5I 910 90 10ms 30 Dec 2022 672nd TheGlitcher1705 910 90 37ms 16 Mar 2023 672nd SB-945 910 90 12ms 10 Jul 2023 672nd cingulataluke 910 90 11ms 26 Aug 2023 672nd dranjohn 910 90 11ms 16 Sep 2023 672nd minhtrancccp 910 90 11ms 11 Oct 2023 672nd pde-bakk 🇳🇱 910 90 11ms 23 Oct 2023 672nd NickTheEASDude 🇺🇸 910 90 11ms 15 Nov 2023 672nd doktoren 910 90 10ms 10 Dec 2023 672nd Chimplement 910 90 11ms 13 Dec 2023 672nd epic-programmer-guy 910 90 11ms 31 Dec 2023 672nd Jacob385 910 90 11ms 29 Feb 2024 672nd OCNeve 910 90 10ms 18 Jun 2024 672nd CutSandstone 910 90 40ms 4 Jul 2024 672nd martion2007 910 90 11ms 15 Aug 2024 672nd gallium-gonzollium 910 90 11ms 26 Aug 2024 672nd alemelis 910 90 11ms 1 Oct 2024 672nd rozium 910 90 10ms 11 Oct 2024 672nd Artemis21 🇬🇧 910 90 11ms 21 Dec 2024 672nd WCScrypto-official 910 90 10ms 22 Dec 2024 672nd Alithinar 910 90 11ms 15 May 2025 672nd LuisGoncalves05 🇵🇹 910 90 11ms 9 Jul 2025 672nd ESOrSomething 910 90 38ms 26 Sep 2025 672nd jacekwladzinski 910 90 10ms 2 Oct 2025 672nd solisolu 910 90 11ms 15 Nov 2025 718th MeWhenI 🇻🇦 910 113 12ms 29 Mar 2024 719th lynn 910 124 24ms 11 Jul 2023 719th Steffan153 🇫🇮 910 124 24ms 16 Jun 2024 First Prev 641–720 of 3,396 Next Last