The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Ordinal Numbers 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 GrayJoKing 🇦🇺 839 142 27ms 17 Feb 2023 482nd dsntzn 🇸🇰 838 76 10ms 29 Aug 2020 482nd GusGold 838 76 10ms 17 Nov 2020 484th GrayJoKing 🇦🇺 837 109 40ms 6 Sep 2022 485th boxjelly 837 135 181ms 2 Jan 2021 485th edsrzf 🇳🇿 837 135 177ms 9 hours ago 487th GolfingSuccess 🇬🇷 837 216 472ms 6 Mar 2025 488th SirBogman 🇺🇸 836 133 41ms 3 Jun 2025 489th GrayJoKing 🇦🇺 835 118 487ms 4 Mar 2022 490th DialFrost 🇸🇬 835 120 111ms 19 days ago 491st inventshah 834 87 2ms 12 Jun 2022 492nd MeWhenI 🇻🇦 833 59 12ms 18 Nov 2023 493rd GrayJoKing 🇦🇺 833 60 922ms 24 Mar 2021 494th Steffan153 🇫🇮 833 95 5ms 20 Aug 2023 494th Shanethegamer 🇺🇸 833 95 5ms 20 Aug 2023 496th Steffan153 🇫🇮 833 143 29ms 17 Feb 2023 497th bendiscz 833 148 282ms 17 Apr 2020 497th sean-niemann 🇺🇸 833 148 271ms 29 Aug 2023 499th Shanethegamer 🇺🇸 833 217 1,542ms 28 Apr 2025 500th kaascevich 832 108 104ms 20 Jul 2025 501st prplz 🇦🇺 831 53 70ms 7 Jun 2020 501st olivermrose 🇺🇸 831 53 37ms 4 Dec 2021 501st nwellnhof 🇩🇪 831 53 45ms 28 Dec 2021 501st JayXon 🇺🇸 831 53 58ms 22 Feb 2025 505th DaCoolOne 831 88 2ms 22 Feb 2022 506th MeWhenI 🇻🇦 830 80 3ms 13 Oct 2023 506th GolfingSuccess 🇬🇷 830 80 4ms 16 Nov 2023 508th neel11235813 828 68 371ms 27 Mar 2024 508th xsot 🇸🇬 828 68 376ms 14 May 2024 510th MichalMarsalek 🇨🇿 828 107 379ms 8 Mar 2022 511th lynn 828 144 30ms 16 Jul 2023 512th Andrey-Plotnikov 827 77 9ms 2 Jan 2023 512th Maznek 827 77 10ms 4 Jun 2023 512th Natanaelel 🇸🇪 827 77 9ms 18 Jan 2025 515th HumanEquivalentUnit 826 64 280ms 24 Jun 2020 515th bstrautin 826 64 358ms 20 Jul 2020 517th snyderek 🇺🇸 826 112 445ms 27 Sep 2024 518th DialFrost 🇸🇬 826 219 620ms 27 Jan 2025 519th kaptsanovb 825 78 12ms 31 May 2023 519th JunkIce 825 78 19ms 24 Nov 2024 519th luuumine 🇫🇷 825 78 12ms 16 Oct 2025 522nd stefangimmillaro 825 121 424ms 6 Oct 2025 523rd Sakisan 🇧🇪 825 137 180ms 12 Apr 2022 523rd Z-snails 825 137 176ms 5 Dec 2023 525th MeWhenI 🇻🇦 824 135 43ms 29 Apr 2025 526th MeWhenI 🇻🇦 823 82 11ms 29 Dec 2024 527th primo-ppcg 🇹🇭 822 99 334ms 21 Nov 2021 528th emplv 🇱🇻 822 150 271ms 30 Jun 2022 529th ovs-code 🇩🇪 822 220 483ms 1 Feb 2025 530th DialFrost 🇸🇬 820 81 4ms 2 Dec 2024 531st lynn 819 54 4ms 27 May 2022 532nd btjones0 819 60 144ms 9 Jan 2021 532nd janbehrens 🇩🇪 819 60 10ms 5 Dec 2023 534th GrayJoKing 🇦🇺 819 85 162ms 31 May 2022 535th ovs-code 🇩🇪 819 113 471ms 3 Jun 2024 536th emplv 🇱🇻 818 92 99ms 20 Dec 2022 537th ScottHamper 818 122 462ms 21 days ago 538th primo-ppcg 🇹🇭 817 90 19ms 28 Jan 2023 538th kg583 🇺🇸 817 90 19ms 20 Oct 2024 538th CLOStrophobic 🇮🇹 817 90 20ms 19 Jan 2025 541st stefangimmillaro 817 151 281ms 15 Jul 2023 542nd GrayJoKing 🇦🇺 816 69 368ms 23 Jul 2024 542nd duckyluuk 🇳🇱 816 69 358ms 29 Aug 2024 542nd Shanethegamer 🇺🇸 816 69 406ms 30 Oct 2024 542nd snoozingnewt 🇨🇦 816 69 363ms 27 days ago 546th pg98 816 78 10ms 4 Sep 2019 546th efgen 816 78 10ms 1 Jul 2020 546th KaeruCT 816 78 10ms 7 Oct 2020 546th ernestd 816 78 10ms 22 Jan 2021 546th BambooleanLogic 🇸🇪 816 78 10ms 1 Dec 2021 546th unfinishedprogram 816 78 9ms 29 Jun 2023 552nd sean-niemann 🇺🇸 815 73 6ms 20 Dec 2024 553rd Attero 🇸🇪 814 51 154ms 21 Oct 2020 554th hiichbindermax 814 79 19ms 25 Feb 2022 554th SB-945 814 79 18ms 30 Aug 2023 556th Steffan153 🇫🇮 814 86 10ms 13 Dec 2023 556th emgordon154 814 86 14ms 29 Jul 2025 556th error256 814 86 11ms 29 Jul 2025 559th ovs-code 🇩🇪 814 121 457ms 14 Jul 2023 560th MeWhenI 🇻🇦 813 65 297ms 28 Jan 2023 First Prev 481–560 of 1,853 Next Last