The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Roman to Arabic 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 237th sean-niemann 🇺🇸 909 88 120ms 8 Apr 2025 237th edsrzf 🇳🇿 909 88 281ms 9 May 2025 243rd MeWhenI 🇻🇦 908 59 60ms 31 Mar 2024 244th JayXon 🇺🇸 908 81 4,288ms 12 Nov 2024 245th DialFrost 🇸🇬 907 67 1,072ms 10 Oct 2024 246th AdrienHache 🇫🇷 907 68 58ms 25 Aug 2024 246th lyphyser 907 68 57ms 4 Jan 2025 248th JayXon 🇺🇸 907 100 410ms 23 Jul 2025 249th nwellnhof 🇩🇪 907 113 558ms 25 Sep 2025 249th ScottHamper 907 113 634ms 19 days ago 251st ovs-code 🇩🇪 906 78 69ms 28 Nov 2022 252nd sisyphus-ppcg 🇦🇺 906 87 75ms 16 Apr 2024 253rd JayXon 🇺🇸 906 109 116ms 30 Oct 2023 254th Steffan153 🇫🇮 905 87 485ms 16 Jan 2024 254th xsot 🇸🇬 905 87 573ms 25 Jan 2024 254th pardouin 🇫🇷 905 87 408ms 1 Jul 2024 254th sean-niemann 🇺🇸 905 87 565ms 28 Jun 2025 254th CaedenHarper 🇨🇦 905 87 592ms 11 days ago 259th stefangimmillaro 904 89 389ms 2 Oct 2023 259th JayXon 🇺🇸 904 89 143ms 31 Oct 2024 261st Lydxn 🇨🇦 904 140 334ms 4 Jun 2024 262nd CaedenHarper 🇨🇦 903 72 998ms 4 Sep 2025 263rd sisyphus-ppcg 🇦🇺 903 100 13ms 17 Apr 2022 263rd Shanethegamer 🇺🇸 903 100 13ms 31 Oct 2022 263rd Steffan153 🇫🇮 903 100 15ms 11 Dec 2022 266th acotis 903 126 157ms 24 Jun 2025 267th GrayJoKing 🇦🇺 902 53 34ms 4 Apr 2024 268th DialFrost 🇸🇬 901 88 3,826ms 7 Oct 2024 269th DialFrost 🇸🇬 900 91 50ms 28 Jul 2025 270th JayXon 🇺🇸 900 104 28ms 20 Nov 2025 270th sean-niemann 🇺🇸 900 104 29ms 12 days ago 272nd edsrzf 🇳🇿 898 101 384ms 23 Jul 2025 273rd sean-niemann 🇺🇸 898 110 125ms 1 Jan 2025 274th rboath 897 39 86ms 23 Jan 2025 275th stefangimmillaro 897 82 4,730ms 12 Nov 2024 276th FortuiteMan 🇫🇷 897 106 41ms 29 Aug 2023 277th primo-ppcg 🇹🇭 896 88 71ms 9 Jun 2024 278th edsrzf 🇳🇿 895 100 76ms 13 Feb 2025 279th JayXon 🇺🇸 895 120 6ms 24 Sep 2022 280th Shanethegamer 🇺🇸 895 125 311ms 16 Apr 2022 281st rucin93 🇵🇱 894 85 14ms 7 Jan 2021 281st DialFrost 🇸🇬 894 85 14ms 24 Jan 2023 281st Steffan153 🇫🇮 894 85 14ms 25 Jan 2023 281st sean-niemann 🇺🇸 894 85 15ms 12 Mar 2023 285th GrayJoKing 🇦🇺 894 88 466ms 16 Jan 2024 285th ovs-code 🇩🇪 894 88 483ms 27 Jan 2024 285th m-tkach 🇺🇦 894 88 415ms 31 Jan 2024 285th duckyluuk 🇳🇱 894 88 489ms 18 Apr 2024 285th GolfingSuccess 🇬🇷 894 88 399ms 1 Mar 2025 290th tomtheisen 🇺🇸 894 90 389ms 21 Mar 2025 291st edsrzf 🇳🇿 894 101 6ms 24 days ago 292nd GrayJoKing 🇦🇺 893 109 51ms 5 Nov 2023 292nd xsot 🇸🇬 893 109 46ms 29 Mar 2024 294th primo-ppcg 🇹🇭 892 94 15ms 21 Aug 2023 295th JayXon 🇺🇸 891 142 348ms 31 Oct 2023 295th Shanethegamer 🇺🇸 891 142 284ms 31 Oct 2023 295th sean-niemann 🇺🇸 891 142 279ms 7 Nov 2023 295th Steffan153 🇫🇮 891 142 272ms 26 Jul 2024 299th sean-niemann 🇺🇸 890 73 1,054ms 13 Sep 2025 300th MeWhenI 🇻🇦 890 111 114ms 30 Oct 2023 300th Shanethegamer 🇺🇸 890 111 115ms 31 Oct 2023 300th stefangimmillaro 890 111 112ms 6 Nov 2023 300th DialFrost 🇸🇬 890 111 115ms 5 Jun 2024 304th primo-ppcg 🇹🇭 889 90 285ms 25 Apr 2025 305th JayXon 🇺🇸 888 101 508ms 31 Oct 2023 306th inventshah 888 121 5ms 14 Sep 2022 307th 4hg 🇺🇸 887 65 43ms 25 Jan 2023 308th nwellnhof 🇩🇪 887 77 24ms 1 Aug 2022 309th KasperKivimaeki 🇫🇮 887 116 86ms 8 Apr 2025 310th inventshah 886 83 4,856ms 29 Oct 2024 311th edsrzf 🇳🇿 886 87 133ms 3 Feb 2025 312th JayXon 🇺🇸 886 111 1,347ms 2 Nov 2023 313th GrayJoKing 🇦🇺 885 70 604ms 18 Feb 2022 314th tomtheisen 🇺🇸 884 86 15ms 27 Oct 2020 314th AlephSquirrel 884 86 15ms 15 Feb 2023 314th stefangimmillaro 884 86 19ms 15 Sep 2024 317th Shanethegamer 🇺🇸 884 89 500ms 16 Jan 2024 317th sisyphus-ppcg 🇦🇺 884 89 475ms 16 Jan 2024 317th MeWhenI 🇻🇦 884 89 433ms 24 May 2024 317th dokutan 884 89 515ms 24 Mar 2025 First Prev 241–320 of 1,454 Next Last