The Calendar hole will go live in approximately 6 days. Why not try and solve it ahead of time?
Ordinal Numbers in C# 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 1st JayXon 🇺🇸 1,000 87 359ms 15 Mar 2023 1st namelessiw 1,000 87 410ms 5 Jun 2025 1st AdrienHache 🇫🇷 1,000 87 410ms 18 Aug 2025 4th btnlq 946 92 361ms 15 Mar 2023 5th nwellnhof 🇩🇪 916 95 373ms 19 Apr 2023 5th tomtheisen 🇺🇸 916 95 391ms 10 Feb 2025 7th Yax42 🇫🇷 906 96 402ms 17 Dec 2024 8th primo-ppcg 🇹🇭 879 99 334ms 21 Nov 2021 9th roavin 861 101 360ms 23 Jun 2022 10th iznax 845 103 335ms 21 Nov 2021 11th revlayle 🇺🇸 829 105 338ms 21 Nov 2021 11th Steffan153 🇫🇮 829 105 333ms 28 Jan 2023 13th MeWhenI 🇻🇦 821 106 337ms 26 Jul 2023 13th stefangimmillaro 821 106 357ms 26 Jul 2023 13th sean-niemann 🇺🇸 821 106 400ms 9 Aug 2024 16th qrakhen 813 107 355ms 14 Nov 2025 17th ScottHamper 806 108 337ms 21 Nov 2021 18th sultan 798 109 336ms 25 Feb 2024 19th postie77 784 111 417ms 26 May 2023 19th janbehrens 🇩🇪 784 111 336ms 5 Dec 2023 19th Shanethegamer 🇺🇸 784 111 370ms 26 Mar 2024 19th pardouin 🇫🇷 784 111 375ms 26 Oct 2024 23rd annaproxy 777 112 340ms 20 Mar 2022 24th billings7 🇬🇧 770 113 349ms 21 Nov 2021 25th YuryChaikou-ServiceNow 763 114 343ms 29 Oct 2022 26th Alikont 750 116 354ms 21 Nov 2021 26th JDiLenarda 🇫🇷 750 116 328ms 21 Nov 2021 26th Yewzir 🇧🇪 750 116 332ms 19 Jun 2024 29th arctouch-cristiannevianna 744 117 355ms 28 Jun 2023 29th rifatx 744 117 400ms 10 Jul 2024 29th tomh1012 744 117 382ms 27 Nov 2025 32nd Attero 🇸🇪 737 118 346ms 21 Nov 2021 33rd tdkkdt 🇷🇺 725 120 344ms 21 Nov 2021 34th Squimbletin 713 122 386ms 24 Apr 2025 35th jahakari 707 123 339ms 30 Apr 2022 35th bac0id 707 123 374ms 4 Jul 2024 35th Skellybob56 707 123 361ms 14 Nov 2025 35th amazingalek 707 123 409ms 4 days ago 39th Meowsan91 🇨🇿 702 124 332ms 21 Nov 2021 39th Xwilarg 🇫🇷 702 124 346ms 21 Nov 2021 41st ChristophHornung 690 126 334ms 21 Nov 2021 41st Hankinabag 690 126 338ms 21 Nov 2021 41st ericlangedijk 🇸🇮 690 126 332ms 20 Feb 2022 44th mukulkesh 685 127 335ms 21 Nov 2021 45th ILMTitan 680 128 350ms 21 Nov 2021 45th Pecanolith 680 128 367ms 24 Apr 2025 47th juliansiebert 🇩🇪 669 130 354ms 2 Mar 2025 48th p-vf 🇨🇭 654 133 340ms 21 Nov 2021 49th RandGuy 649 134 330ms 1 Apr 2022 49th tbschff 649 134 335ms 16 Apr 2022 51st c0d3-4-F00d 🇩🇪 644 135 344ms 21 Nov 2021 52nd Soyo-Wind 630 138 403ms 4 Nov 2025 53rd DaCuteRaccoon 621 140 353ms 16 May 2022 54th MarkStockwellZA 576 151 336ms 15 Jan 2022 55th Jvardas 565 154 346ms 21 Nov 2021 55th CaedenHarper 🇨🇦 565 154 394ms 16 Oct 2025 57th glatzert 537 162 355ms 27 May 2023 58th dokutan 527 165 386ms 14 Oct 2024 59th KatieLG 🇬🇧 521 167 368ms 21 Nov 2021 60th Adelzu 506 172 335ms 21 Nov 2021 61st hamhub7 483 180 341ms 4 Aug 2022 62nd ChrisTheisen 481 181 340ms 19 Dec 2022 63rd mykroft42 468 186 332ms 10 May 2020 64th kjhughes097 🇬🇧 433 201 330ms 21 Nov 2021 65th iPablol 341 255 371ms 25 Oct 2023 66th KatieLG-Transpiler 🇬🇧 5 16,065 465ms 4 Jul 2022 1–66 of 66
