The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Roman to Arabic in all languages in chars. 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 Chars Time Submitted 481st michaelmoynihan 767 131 486ms 27 Aug 2025 482nd DialFrost 🇸🇬 766 121 10ms 7 Nov 2023 483rd Yewzir 🇧🇪 766 139 5ms 9 Jun 2024 484th dokutan 762 63 53ms 20 Apr 2025 485th MeWhenI 🇻🇦 760 118 463ms 4 Mar 2022 486th CaedenHarper 🇨🇦 759 149 155ms 22 Aug 2025 487th dcgjb 757 77 650ms 16 May 2024 488th Yewzir 🇧🇪 756 100 13ms 9 Jun 2024 489th primo-ppcg 🇹🇭 756 107 93ms 12 Feb 2022 490th CaedenHarper 🇨🇦 755 119 365ms 18 Aug 2025 491st m-tkach 🇺🇦 755 133 677ms 14 Aug 2023 492nd CaedenHarper 🇨🇦 754 83 957ms 18 Aug 2025 493rd MeWhenI 🇻🇦 754 101 41ms 1 Nov 2023 494th primo-ppcg 🇹🇭 753 130 105ms 14 Feb 2020 495th Yewzir 🇧🇪 752 213 2,776ms 14 Nov 2025 496th primo-ppcg 🇹🇭 750 104 383ms 10 Apr 2025 497th btjones0 749 96 19ms 16 Jul 2022 498th MeWhenI 🇻🇦 749 108 58ms 30 Oct 2023 499th SirBogman 🇺🇸 748 49 6ms 16 Nov 2023 500th MarcMush 🇫🇷 748 79 1,164ms 11 Jan 2024 501st janbehrens 🇩🇪 747 78 956ms 3 Dec 2023 502nd janbehrens 🇩🇪 747 105 3,190ms 18 May 2023 503rd Steffan153 🇫🇮 746 59 163ms 25 Jan 2023 503rd sean-niemann 🇺🇸 746 59 157ms 27 Apr 2024 505th dokutan 745 103 32ms 1 Jul 2024 506th CaedenHarper 🇨🇦 744 39 131ms 26 Oct 2025 507th Yewzir 🇧🇪 744 123 168ms 9 Jun 2024 507th CaedenHarper 🇨🇦 744 123 152ms 7 Nov 2025 509th xsot 🇸🇬 743 87 573ms 25 Jan 2024 509th CaedenHarper 🇨🇦 743 87 592ms 9 days ago 511th primo-ppcg 🇹🇭 743 121 365ms 17 Apr 2022 512th ovs-code 🇩🇪 742 46 35ms 6 Feb 2024 513th emgordon154 741 97 21ms 24 Sep 2024 514th cywong-amino 🇭🇰 741 102 34ms 1 Jul 2020 514th dokutan 741 102 13ms 20 Apr 2025 516th MeWhenI 🇻🇦 740 112 12ms 23 May 2023 517th 4hg 🇺🇸 739 65 43ms 25 Jan 2023 518th inventshah 739 85 10ms 15 Nov 2022 519th MeWhenI 🇻🇦 739 136 85ms 10 Apr 2024 520th Shanethegamer 🇺🇸 738 79 568ms 31 Oct 2023 521st janbehrens 🇩🇪 736 106 7ms 2 Jul 2023 521st Shanethegamer 🇺🇸 736 106 9ms 2 Jul 2023 521st sean-niemann 🇺🇸 736 106 377ms 31 Oct 2023 524th jared-hughes 736 245 131ms 6 Jul 2024 525th inventshah 735 88 604ms 22 Jan 2024 525th ovs-code 🇩🇪 735 88 483ms 27 Jan 2024 525th m-tkach 🇺🇦 735 88 415ms 31 Jan 2024 525th albanian-laundromat 735 88 435ms 9 Aug 2025 529th janbehrens 🇩🇪 735 122 472ms 18 May 2023 530th HPWiz 🇳🇿 734 98 19ms 5 Sep 2021 530th jakobkordez 🇸🇮 734 98 18ms 31 Oct 2022 530th Rubiksmath 734 98 19ms 5 Sep 2023 530th ovs-code 🇩🇪 734 98 66ms 27 Jan 2024 530th elgan65536 734 98 20ms 31 Mar 2024 530th 4atj 734 98 19ms 30 Jun 2025 536th ETHproductions 🇺🇸 734 103 14ms 7 May 2018 536th thisishowmymindworks 🇳🇴 734 103 14ms 6 Aug 2020 536th Maznek 734 103 15ms 28 Jun 2023 539th SirBogman 🇺🇸 727 66 40ms 20 Mar 2022 540th sisyphus-ppcg 🇦🇺 727 89 475ms 16 Jan 2024 540th MeWhenI 🇻🇦 727 89 433ms 24 May 2024 542nd CaedenHarper 🇨🇦 727 104 13ms 17 Aug 2025 543rd kg583 🇺🇸 727 114 13ms 28 Sep 2025 544th xnor-gate 726 99 39ms 18 Sep 2021 544th wh3n3v3r 🇨🇿 726 99 19ms 8 Nov 2024 546th AlephSquirrel 726 138 5ms 29 Jul 2023 547th treeowl 726 153 312ms 25 Feb 2019 548th Lydxn 🇨🇦 725 139 539ms 30 Jun 2021 548th dokutan 725 139 473ms 13 Nov 2025 550th MeWhenI 🇻🇦 724 128 33ms 10 Oct 2023 551st MeWhenI 🇻🇦 723 98 4,103ms 24 Oct 2024 552nd o0lit3 🇺🇸 722 61 23ms 27 Sep 2020 552nd Lydxn 🇨🇦 722 61 163ms 31 Dec 2021 552nd DialFrost 🇸🇬 722 61 161ms 25 Jan 2023 552nd ovs-code 🇩🇪 722 61 166ms 3 Oct 2023 552nd iczelia 🇩🇪 722 61 160ms 5 Nov 2025 552nd blaztoma 🇱🇹 722 61 164ms 25 days ago 558th Waffle3z 722 124 19ms 17 Apr 2022 559th laikoni 722 154 315ms 23 Feb 2019 560th prplz 🇦🇺 720 81 870ms 17 Jun 2020 First Prev 481–560 of 1,448 Next Last