The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Fizz Buzz in C 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 478th sadsunshower 615 117 2ms 12 Jul 2020 478th copoer 615 117 2ms 27 Feb 2023 478th BraedenMooreDev 615 117 2ms 29 Oct 2023 478th smiksky 🇺🇸 615 117 4ms 15 Oct 2024 478th Andrey2001 615 117 1ms 21 days ago 486th ramytarchichy 610 118 2ms 22 Jun 2019 486th PatrickLove 610 118 2ms 26 Jun 2019 486th xor-shift 610 118 2ms 24 Jun 2020 486th fraserli 🇦🇺 610 118 1ms 3 Jan 2022 486th carlsoncorey16 610 118 1ms 29 Oct 2023 486th jccummi1 610 118 1ms 29 Oct 2023 486th imma-Spring 610 118 2ms 2 Nov 2023 486th ChAoSUnItY 610 118 2ms 30 May 2025 486th j0d3v 610 118 2ms 19 Jul 2025 495th gardarjuto 605 119 1ms 11 Mar 2020 495th samzarr 605 119 2ms 27 Sep 2024 495th mpn2005 605 119 1ms 4 Oct 2024 498th adoxography 600 120 1ms 26 Sep 2019 498th MaidenJD 600 120 2ms 28 Aug 2020 498th kylix-rd 600 120 2ms 23 Sep 2020 498th strange-corner 600 120 2ms 5 Apr 2021 498th yudi-matsuzake 600 120 2ms 11 Aug 2021 498th roushk 600 120 2ms 20 Aug 2021 498th plainoldcheese 🇦🇶 600 120 2ms 23 Mar 2023 505th pineapplehunter 595 121 2ms 13 May 2019 505th PeriBooty 595 121 2ms 26 Nov 2019 505th exargon 595 121 1ms 2 Jan 2022 505th dmyronmartin 595 121 2ms 6 Mar 2022 505th Sora1248 🇩🇪 595 121 2ms 22 Jan 2023 505th BillyJay 595 121 2ms 9 Jan 2025 505th cyanbun96 595 121 2ms 23 Sep 2025 512th kotet 590 122 1ms 26 Jun 2020 512th LittleB0xes 590 122 2ms 27 Feb 2021 512th nantf 590 122 3ms 13 Mar 2021 512th MauroAlvarezArigos 590 122 2ms 24 Nov 2021 512th ms-tingliang 590 122 1ms 5 Aug 2022 512th nanakusa8908 590 122 1ms 19 Dec 2022 512th msbranicky 590 122 2ms 27 Aug 2023 512th chinise 590 122 2ms 9 Nov 2025 520th flaminggoat 585 123 1ms 24 Sep 2020 520th Adrien-AM 585 123 1ms 20 Dec 2021 520th kmcomer 585 123 2ms 22 Feb 2022 520th becaido 585 123 1ms 11 Oct 2023 524th blasio99 581 124 1ms 13 Apr 2021 524th HornMichaelS 581 124 2ms 24 Apr 2022 524th jlivas 581 124 2ms 1 Jul 2022 524th ldoodle 581 124 2ms 23 Aug 2022 524th Sparky83 581 124 1ms 19 Oct 2023 524th majorrateater 581 124 2ms 10 Nov 2024 524th gabe-gallegos 581 124 2ms 26 Mar 2025 524th mwarvik 581 124 2ms 2 days ago 532nd pbrodhead 576 125 2ms 14 Jul 2021 532nd KrausRaus 🇺🇸 576 125 2ms 11 Sep 2021 532nd noahgitsham 576 125 2ms 21 Jun 2024 532nd Pyroan 576 125 1ms 16 May 2025 536th Batzuga 571 126 1ms 10 Sep 2019 536th fynnkroeger 571 126 1ms 11 Jan 2021 536th bbakersmith 571 126 1ms 4 Jul 2021 536th Kasci 571 126 2ms 7 Dec 2021 536th dillon-duncando 571 126 1ms 24 Dec 2021 536th NDR0216 🇹🇼 571 126 1ms 9 May 2024 536th zach333 571 126 2ms 12 Jul 2024 543rd starxingchenc 567 127 1ms 30 May 2021 543rd lundchristian 567 127 1ms 5 Feb 2022 543rd esseeffeenne 567 127 2ms 6 Jun 2022 543rd carsongoodwin32 567 127 2ms 22 Jul 2022 543rd BpbjsGreen 🇨🇳 567 127 2ms 7 Jul 2024 548th uier 563 128 2ms 28 Dec 2019 548th zgialor-lab 563 128 2ms 39 hours ago 550th elisherer 🇮🇱 558 129 1ms 3 Apr 2019 550th rachelambda 558 129 2ms 6 Jun 2020 550th j-Ewan 558 129 2ms 9 Feb 2023 550th fr13ndxd 558 129 2ms 14 Sep 2024 554th francescolasco 554 130 1ms 19 Nov 2021 554th tik25 554 130 2ms 28 Mar 2024 556th pingu19 550 131 2ms 23 Oct 2019 556th Hawkeye99 550 131 1ms 17 Sep 2020 556th myclevorname 🇺🇸 550 131 1ms 10 Aug 2023 559th chunky 545 132 1ms 2 Oct 2020 560th sech1p 🇵🇱 541 133 2ms 30 Oct 2021 First Prev 481–560 of 746 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