The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Leap Years 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 721st Shanethegamer 🇺🇸 892 60 99ms 15 Apr 2025 721st snoozingnewt 🇨🇦 892 60 96ms 19 days ago 721st DialFrost 🇸🇬 892 60 100ms 19 days ago 721st emgordon154 892 60 95ms 18 days ago 725th primo-ppcg 🇹🇭 891 36 50ms 8 Dec 2018 725th nwellnhof 🇩🇪 891 36 37ms 28 Apr 2020 725th Waffle3z 891 36 46ms 14 Jul 2021 725th lynn 891 36 36ms 10 Sep 2021 725th sean-niemann 🇺🇸 891 36 37ms 5 Apr 2022 725th jared-hughes 891 36 32ms 9 Sep 2022 725th MeWhenI 🇻🇦 891 36 50ms 10 Oct 2022 725th Steffan153 🇫🇮 891 36 35ms 26 Dec 2022 725th ovs-code 🇩🇪 891 36 49ms 9 May 2023 725th DialFrost 🇸🇬 891 36 36ms 8 Nov 2023 725th pardouin 🇫🇷 891 36 32ms 21 Aug 2024 725th dokutan 891 36 37ms 25 Sep 2024 725th FlyingPenguin223 891 36 41ms 17 Dec 2024 725th fuzzylojik-golf 🇺🇸 891 36 32ms 25 Aug 2025 739th clockworknazo 891 54 3ms 23 Oct 2022 740th lynn 891 56 9ms 16 Nov 2021 740th ovs-code 🇩🇪 891 56 9ms 29 Jun 2024 742nd primo-ppcg 🇹🇭 891 131 11ms 2 Aug 2023 743rd andersk 🇺🇸 890 60 115ms 20 Mar 2020 743rd primo-ppcg 🇹🇭 890 60 122ms 2 May 2020 743rd JayXon 🇺🇸 890 60 124ms 23 Aug 2021 743rd Lydxn 🇨🇦 890 60 120ms 24 Aug 2021 743rd lynn 890 60 120ms 10 Sep 2021 743rd Super-Pizza 🇨🇦 890 60 124ms 22 May 2023 749th Steffan153 🇫🇮 889 52 4ms 16 Apr 2023 749th Lydxn 🇨🇦 889 52 4ms 12 May 2023 749th GrayJoKing 🇦🇺 889 52 4ms 14 Aug 2023 749th dokutan 889 52 4ms 25 Sep 2024 749th kg583 🇺🇸 889 52 4ms 10 days ago 749th edsrzf 🇳🇿 889 52 4ms 6 days ago 755th saito-ta 🇯🇵 888 42 3ms 22 Jun 2023 756th kg583 🇺🇸 888 62 39ms 13 Feb 2025 757th YoranDS 888 80 72ms 29 May 2023 757th Walter225 888 80 58ms 10 Jul 2023 757th Mandrzejy 🇵🇱 888 80 60ms 22 Feb 2024 757th keelimeguy 🇺🇸 888 80 57ms 16 May 2025 757th GolfingSuccess 🇬🇷 888 80 61ms 2 Sep 2025 757th Andrey2001 888 80 80ms 25 days ago 763rd voytxt 🇨🇿 887 68 432ms 25 Sep 2025 763rd ScottHamper 887 68 443ms 20 days ago 765th MWI-polygolf 886 46 78ms 18 Feb 2023 765th steffan-polygolf 886 46 77ms 19 Feb 2023 765th DialFrost 🇸🇬 886 46 89ms 8 Nov 2023 765th dokutan 886 46 77ms 25 Sep 2024 769th andersk 🇺🇸 886 59 2ms 20 Mar 2020 769th uw4 886 59 1ms 29 Aug 2020 769th janbehrens 🇩🇪 886 59 2ms 22 May 2021 769th lynn 886 59 2ms 2 Oct 2021 769th simon-biber 886 59 2ms 7 Feb 2022 769th solmyr2000 886 59 2ms 18 Jun 2022 769th LorenzoDeGaspari 886 59 2ms 20 Jun 2022 769th AlephSquirrel 886 59 2ms 18 Jul 2022 769th annaproxy 886 59 2ms 8 Jan 2023 769th b10011 🇫🇮 886 59 1ms 8 Jan 2023 769th YoranDS 886 59 2ms 29 May 2023 769th ngthanhtrung23 886 59 2ms 15 Mar 2024 769th orthoplex 🇨🇽 886 59 1ms 14 Jun 2024 769th qwertyuiop3 🇷🇺 886 59 2ms 2 Jun 2025 769th yanjs 886 59 1ms 5 Jul 2025 769th luuumine 🇫🇷 886 59 1ms 29 Oct 2025 785th frankgraziano 885 132 11ms 3 Nov 2025 786th ovs-code 🇩🇪 884 42 385ms 16 Jan 2024 786th Steffan153 🇫🇮 884 42 358ms 16 Jan 2024 786th MeWhenI 🇻🇦 884 42 394ms 13 Jul 2024 786th kg583 🇺🇸 884 42 418ms 31 Jul 2024 790th GrayJoKing 🇦🇺 884 45 121ms 9 Feb 2022 790th sean-niemann 🇺🇸 884 45 119ms 12 Apr 2022 790th MeWhenI 🇻🇦 884 45 122ms 10 Oct 2022 790th Steffan153 🇫🇮 884 45 123ms 1 Jan 2023 790th MWI-polygolf 884 45 122ms 18 Feb 2023 790th steffan-polygolf 884 45 120ms 19 Feb 2023 790th DialFrost 🇸🇬 884 45 121ms 8 Nov 2023 790th dokutan 884 45 121ms 25 Sep 2024 798th villfa 884 50 4ms 27 May 2019 798th UpwardProcess 884 50 4ms 30 Jul 2019 798th ondras 884 50 4ms 3 May 2020 First Prev 721–800 of 4,741 Next Last