The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
United States in Ruby 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 1st primo-ppcg 🇹🇭 1,000 77 37ms 29 Oct 2021 2nd nwellnhof 🇩🇪 975 79 50ms 15 Dec 2020 3rd sisyphus-ppcg 🇦🇺 939 82 42ms 23 Jan 2021 3rd prplz 🇦🇺 939 82 49ms 5 Jun 2021 3rd olivermrose 🇺🇸 939 82 53ms 24 Aug 2021 3rd JayXon 🇺🇸 939 82 46ms 17 Nov 2021 3rd stefangimmillaro 939 82 47ms 4 Aug 2022 3rd MeWhenI 🇻🇦 939 82 44ms 4 Aug 2022 3rd DialFrost 🇸🇬 939 82 53ms 25 Jan 2023 3rd Steffan153 🇫🇮 939 82 52ms 25 Jan 2023 3rd GrayJoKing 🇦🇺 939 82 36ms 20 Dec 2023 3rd ovs-code 🇩🇪 939 82 53ms 1 Feb 2024 3rd sean-niemann 🇺🇸 939 82 43ms 7 Jul 2025 3rd pardouin 🇫🇷 939 82 50ms 11 Aug 2025 3rd emgordon154 939 82 50ms 16 Sep 2025 16th blaztoma 🇱🇹 928 83 50ms 13 Nov 2025 17th janlelis 895 86 41ms 2 Feb 2021 18th SirBogman 🇺🇸 885 87 53ms 13 Jun 2024 19th jared-hughes 846 91 49ms 11 Sep 2022 20th CaedenHarper 🇨🇦 837 92 51ms 7 Sep 2025 21st beirigo 🇧🇷 802 96 47ms 3 Sep 2024 22nd anter69 🇭🇺 694 111 39ms 17 Sep 2024 23rd tatzyr 🇯🇵 670 115 35ms 23 Dec 2024 24th aksyristos 592 130 34ms 29 Jan 2023 25th Just4FunCoder 579 133 56ms 24 Sep 2025 26th Natanaelel 🇸🇪 554 139 50ms 19 Jul 2023 27th LostSyntax21 🇬🇧 550 140 37ms 5 Jul 2025 28th dokutan 542 142 39ms 11 Sep 2025 29th olleicua 🇺🇸 535 144 50ms 23 Apr 2025 30th frankgraziano 484 159 36ms 29 Dec 2020 31st adoxography 464 166 52ms 25 Feb 2020 32nd KatieLG 🇬🇧 456 169 32ms 29 Aug 2024 33rd Andriamanitra 🇫🇮 401 192 42ms 1 Sep 2022 34th snoozingnewt 🇨🇦 372 207 53ms 14 Oct 2025 35th proton 🇩🇪 367 210 54ms 5 Jun 2020 36th awei82 262 294 37ms 30 Jun 2022 37th 4hg 🇺🇸 179 429 34ms 28 Nov 2022 38th BryanH 119 646 49ms 22 Sep 2021 39th Haksell 🇦🇶 116 666 47ms 22 Feb 2023 40th tadd 107 720 53ms 16 Apr 2020 41st Ralac07 🇦🇺 102 754 33ms 17 Jun 2024 42nd felixli1998 93 827 39ms 22 Aug 2024 43rd razetime 82 935 47ms 4 Jul 2021 44th KatieLG-Transpiler 🇬🇧 74 1,041 44ms 3 Jul 2022 1–44 of 44
