The Calendar hole will go live in approximately 5 hours. 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 641st Natanaelel 🇸🇪 683 73 185ms 16 Feb 2023 642nd XenThe 🇬🇧 681 111 17ms 1 Jul 2025 643rd CaedenHarper 🇨🇦 681 136 11ms 22 Aug 2025 644th annaproxy 681 157 30ms 11 May 2023 645th MeWhenI 🇻🇦 676 147 45ms 17 Feb 2023 646th mintypython 675 112 17ms 16 Oct 2018 646th saramaebee 675 112 16ms 18 Oct 2018 646th taklam 675 112 17ms 4 Jul 2020 646th igmcdowell 675 112 17ms 4 Jan 2022 650th ReidZ3 🇺🇸 674 165 319ms 13 Dec 2020 651st DialFrost 🇸🇬 672 106 499ms 16 Nov 2024 652nd Jiramide 672 133 13ms 7 Feb 2021 653rd SirBogman 🇺🇸 669 51 44ms 1 Sep 2022 654th vmcnabb 🇳🇿 669 113 16ms 6 May 2021 654th targrik 669 113 16ms 24 Feb 2025 656th clockworknazo 668 114 21ms 20 Feb 2023 657th sean-niemann 🇺🇸 668 122 3ms 31 Oct 2023 658th MahlerFive 🇨🇦 667 186 328ms 24 Apr 2020 659th AlephSquirrel 666 55 4ms 8 Nov 2025 660th FlorianCassayre 🇫🇷 666 108 21ms 18 Sep 2023 661st MichalMarsalek 🇨🇿 666 135 360ms 30 Aug 2022 662nd Natanaelel 🇸🇪 666 167 305ms 10 May 2025 663rd MeWhenI 🇻🇦 666 271 150ms 29 Nov 2023 664th dokutan 664 138 148ms 13 Nov 2025 665th alexkunin 663 114 14ms 7 Jul 2019 666th SirBogman 🇺🇸 663 182 43ms 17 Apr 2022 667th lionbryce 662 135 15ms 8 Aug 2024 668th RaBa21 🇭🇺 659 109 18ms 12 Jul 2025 669th Bubbler-4 657 52 42ms 9 Dec 2021 669th DialFrost 🇸🇬 657 52 43ms 1 Feb 2023 671st sean-niemann 🇺🇸 657 153 60ms 11 Jul 2024 672nd Shanethegamer 🇺🇸 656 76 143ms 12 Dec 2021 673rd varhammer 🇷🇺 655 121 157ms 13 Dec 2023 674th KasperKivimaeki 🇫🇮 655 137 387ms 7 Nov 2025 675th SB-945 653 110 26ms 7 Apr 2024 675th Troon 653 110 20ms 27 Aug 2025 677th BBoehm 🇩🇪 652 116 14ms 21 Dec 2020 678th dokutan 652 137 16ms 20 Apr 2025 679th MeWhenI 🇻🇦 652 193 33ms 6 Jun 2023 680th hyvyys 646 117 14ms 19 Sep 2020 680th aksyristos 646 117 20ms 2 Nov 2022 682nd 386asm 🇺🇸 646 154 45ms 5 May 2023 683rd edsrzf 🇳🇿 645 118 40ms 12 Nov 2025 684th villfa 645 121 17ms 2 Nov 2018 684th janbehrens 🇩🇪 645 121 358ms 16 May 2023 686th keelimeguy 🇺🇸 642 112 23ms 17 May 2025 687th user189032 641 118 14ms 29 May 2019 688th Shanethegamer 🇺🇸 641 127 4ms 28 May 2025 689th SirBogman 🇺🇸 640 101 587ms 20 Jan 2024 690th Shanethegamer 🇺🇸 640 120 27ms 17 Dec 2023 691st Yewzir 🇧🇪 640 122 343ms 10 Jun 2024 692nd scpchicken 🇵🇼 639 78 185ms 4 May 2022 693rd mrondon8 639 158 514ms 5 Sep 2021 694th RockOfStone 638 140 11ms 17 Mar 2024 695th snyderek 🇺🇸 636 158 58ms 9 Nov 2024 696th unfinishedprogram 635 119 13ms 12 Jul 2024 697th olligobber 🇦🇺 635 175 291ms 21 May 2020 698th MeWhenI 🇻🇦 634 101 923ms 15 Sep 2025 699th jared-hughes 634 141 11ms 16 Apr 2022 700th MeWhenI 🇻🇦 632 58 6ms 16 Jan 2022 701st CaedenHarper 🇨🇦 632 142 213ms 18 Aug 2025 702nd stordev 631 114 20ms 26 Feb 2021 702nd robin-scragg 631 114 20ms 24 Aug 2025 704th PatrickStephansen 🇿🇦 630 120 26ms 9 Jun 2021 704th stefangabos 🇷🇴 630 120 21ms 13 Sep 2022 706th HumanoidCPU 628 103 487ms 7 Jun 2024 707th janbehrens 🇩🇪 628 160 64ms 18 May 2023 708th Jiramide 628 177 296ms 8 Feb 2021 709th janbehrens 🇩🇪 627 161 590ms 16 May 2023 710th jupj 🇫🇮 622 131 3ms 27 Aug 2022 711th MeWhenI 🇻🇦 621 105 151ms 3 Aug 2024 712th YAJUE114514 621 179 292ms 3 Aug 2025 713th chartung17 620 116 22ms 1 Jan 2024 714th JOrE20 🇺🇸 620 122 15ms 7 Nov 2025 715th CaedenHarper 🇨🇦 616 78 38ms 18 Aug 2025 716th sebipopa 🇷🇴 615 123 13ms 14 Sep 2022 717th CaedenHarper 🇨🇦 614 116 481ms 17 Aug 2025 718th jacklynnepenick 614 117 19ms 13 Aug 2021 718th JunkIce 614 117 26ms 24 Nov 2024 720th Yewzir 🇧🇪 613 133 4ms 10 Jun 2024 First Prev 641–720 of 1,455 Next Last