The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Foo Fizz Buzz Bar in Python 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 kevdah 524 126 11ms 5 Oct 2022 641st TheCod-r 🇦🇶 524 126 17ms 26 Feb 2023 641st camieac 🇬🇧 524 126 11ms 22 Jul 2023 641st Fanrco 524 126 12ms 31 Aug 2023 641st eddvrs 524 126 78ms 21 Dec 2023 641st truisseaux 524 126 11ms 5 Sep 2024 647th brochmann 🇸🇪 520 127 17ms 18 Oct 2022 647th 4ndyJ 🇬🇧 520 127 12ms 7 Jan 2023 649th fgrosshans 🇫🇷 516 128 11ms 10 Jan 2022 649th winstonDeGreef 516 128 11ms 11 Jan 2022 649th j-Ewan 516 128 10ms 1 Mar 2022 649th karhuthebear 516 128 17ms 4 May 2022 649th jroscoe5 516 128 11ms 10 Aug 2022 649th wa1ker38552 516 128 13ms 24 May 2023 649th DGipe 516 128 12ms 2 Jul 2024 649th PaulB06 516 128 11ms 7 Nov 2024 657th glassala 512 129 11ms 25 Dec 2024 657th kadamkaustubh 512 129 11ms 25 Sep 2025 659th JohannaWarnqvist 508 130 11ms 12 Feb 2022 659th MathieuIko 508 130 64ms 21 Feb 2022 659th JuanGomez12 508 130 11ms 12 Jan 2023 659th Wildst 508 130 11ms 6 Jul 2023 659th Jacob-Gendelman 508 130 11ms 26 Jul 2023 659th diquah 508 130 10ms 13 Nov 2023 659th Zach10za 508 130 11ms 19 Jan 2024 659th ItsMeNoobieboy 508 130 10ms 12 Jun 2024 659th TheZwierzLF 🇵🇱 508 130 12ms 29 May 2025 668th goGuru 504 131 10ms 26 Dec 2022 668th Gpopcorn 504 131 11ms 12 Jul 2023 668th rexvelde 504 131 12ms 18 Aug 2024 668th Unknownuserfrommars 504 131 13ms 20 Nov 2024 668th benvreeves 504 131 11ms 29 Jul 2025 668th cthierfelder 🇲🇨 504 131 11ms 4 Sep 2025 674th RandGuy 500 132 11ms 30 Jun 2022 674th mbbu3 500 132 12ms 3 Jan 2024 674th vtilde 500 132 11ms 8 Jan 2024 674th JakeDaCake36 500 132 17ms 19 Feb 2024 674th martindotexe 🇳🇴 500 132 65ms 23 Feb 2025 679th Smetalo 496 133 11ms 25 Aug 2022 679th PotatoSaladOverlord 496 133 11ms 7 Apr 2023 679th jdsp522 496 133 11ms 15 Jul 2023 679th wiebecommajonas 496 133 17ms 2 May 2024 679th FVDurumMixto 496 133 10ms 3 Apr 2025 679th EnisEfe0 496 133 11ms 18 May 2025 679th clayboll99 496 133 11ms 14 Jul 2025 679th Maashau 496 133 20ms 9 days ago 687th hymanimy 493 134 10ms 4 Dec 2021 687th virtualnerd2 493 134 10ms 5 Dec 2021 687th OppositeShark 493 134 54ms 7 Apr 2022 687th GulgDev 493 134 13ms 21 Mar 2023 687th ztuned 493 134 11ms 2 Oct 2023 687th Amheus 493 134 11ms 7 Oct 2023 687th nooby31415 493 134 10ms 15 Jul 2025 694th jlundstedt 489 135 10ms 27 Dec 2021 694th vinkami 489 135 11ms 25 May 2023 694th JesseNoEyes 🇺🇸 489 135 10ms 20 Sep 2024 697th felixcroc 485 136 10ms 15 Apr 2022 697th jhpaques 🇫🇷 485 136 17ms 2 Aug 2022 697th Naruto-333 485 136 13ms 17 Feb 2024 700th ConnorSMorrison 482 137 13ms 28 Apr 2022 700th unexpectedferret 482 137 18ms 12 May 2022 700th jessegyger 482 137 11ms 8 Nov 2022 700th crhenley 🇺🇸 482 137 11ms 30 Oct 2023 700th Barry-Other-Barry 482 137 11ms 29 Jul 2025 705th Matthewhine8 478 138 12ms 26 Aug 2025 706th Joashhh 475 139 12ms 1 Sep 2023 707th Lemonz-13223 471 140 11ms 12 May 2022 707th StoverGitHub 471 140 11ms 15 Jun 2022 707th NerdyMcNerd42 471 140 11ms 13 Aug 2022 707th Rythoka 471 140 11ms 17 Oct 2022 707th SkydivingSquid 471 140 11ms 29 Nov 2022 707th Pyro569 471 140 10ms 4 Jul 2023 707th tknight00 471 140 15ms 5 Mar 2024 714th confy 468 141 10ms 28 Dec 2021 714th doppelar0n 🇩🇪 468 141 12ms 2 Oct 2022 714th desecaw13 468 141 11ms 24 Jan 2025 717th estomagordo 🇳🇱 465 142 11ms 9 Dec 2021 717th Armangharleghi1999 465 142 10ms 25 May 2022 717th roylucas 465 142 11ms 18 Jan 2023 717th sciencedjinn 465 142 11ms 8 Nov 2024 First Prev 641–720 of 862 Next Last