The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
φ in all languages 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 639th gigaprofisi 🇺🇸 775 62 9ms 1 Sep 2025 642nd DialFrost 🇸🇬 774 107 731ms 1 Apr 2025 643rd BREMAUCY 🇫🇷 773 44 213ms 23 Mar 2024 643rd janlelis 773 44 46ms 23 Sep 2024 643rd DialFrost 🇸🇬 773 44 254ms 26 Dec 2024 646th DialFrost 🇸🇬 773 136 86ms 13 days ago 647th FlorianCassayre 🇫🇷 768 139 281ms 19 Jul 2025 648th stassats 767 65 22ms 28 Apr 2018 648th jslip 767 65 35ms 5 Sep 2018 648th GrayJoKing 🇦🇺 767 65 13ms 17 Dec 2020 648th BBoehm 🇩🇪 767 65 13ms 25 Feb 2021 652nd Sp3000 🇦🇺 766 38 10ms 28 May 2021 653rd stefangimmillaro 765 65 3,400ms 14 Nov 2024 654th stefangimmillaro 765 187 153ms 6 Nov 2023 655th lynn 764 61 16ms 15 Nov 2021 656th SirBogman 🇺🇸 762 133 47ms 3 Jun 2025 657th CatsAreFluffy 760 68 10ms 19 Feb 2023 657th cros107 🇦🇺 760 68 9ms 5 Sep 2025 657th CommandLeo 🇮🇹 760 68 108ms 24 Nov 2025 660th emgordon154 758 97 482ms 27 May 2025 661st rucin93 🇵🇱 757 116 102ms 28 Mar 2025 662nd snoozingnewt 🇨🇦 756 45 91ms 16 Oct 2025 662nd anter69 🇭🇺 756 45 99ms 14 days ago 664th pardouin 🇫🇷 756 66 14ms 21 Mar 2025 665th sean-niemann 🇺🇸 756 159 48ms 25 May 2023 666th MeWhenI 🇻🇦 755 50 95ms 1 Nov 2023 667th SirBogman 🇺🇸 754 59 334ms 9 Jun 2020 668th primo-ppcg 🇹🇭 752 163 1,827ms 3 Feb 2022 669th DayDun 🇸🇪 751 64 11ms 24 Jan 2023 669th jbt 751 64 9ms 24 Dec 2023 671st j-Ewan 751 142 352ms 14 Mar 2022 671st jerrandolph 751 142 320ms 23 Dec 2023 673rd MeWhenI 🇻🇦 749 62 164ms 3 Aug 2024 674th Shanethegamer 🇺🇸 749 69 9ms 27 Jun 2022 674th elgan65536 749 69 70ms 18 Nov 2023 676th primo-ppcg 🇹🇭 746 71 898ms 25 Nov 2021 677th ovs-code 🇩🇪 742 67 4,209ms 30 Nov 2024 678th edsrzf 🇳🇿 740 51 61ms 8 days ago 679th primo-ppcg 🇹🇭 740 63 112ms 30 Jan 2022 680th Natanaelel 🇸🇪 739 46 49ms 28 Dec 2022 680th Yewzir 🇧🇪 739 46 85ms 19 Feb 2024 680th Lv0Sys 🇵🇱 739 46 86ms 8 Jun 2025 683rd zbreit 🇺🇸 739 70 12ms 17 Aug 2021 683rd thehylian 739 70 12ms 30 Dec 2022 683rd NDR0216 🇹🇼 739 70 11ms 17 Feb 2023 683rd fourth-bit 739 70 12ms 9 Jul 2023 683rd plcc0 739 70 13ms 24 Mar 2025 683rd cefqrn 739 70 11ms 13 Apr 2025 683rd dirckvdende 739 70 12ms 27 Jul 2025 683rd InigoK 🇺🇸 739 70 14ms 29 Aug 2025 691st stefangimmillaro 739 96 122ms 18 Oct 2023 692nd CatsAreFluffy 736 68 406ms 15 Jan 2024 693rd anter69 🇭🇺 736 72 767ms 14 days ago 694th CaedenHarper 🇨🇦 736 112 437ms 24 Sep 2025 694th dokutan 736 112 451ms 7 Nov 2025 696th stefangimmillaro 734 138 52ms 26 Apr 2025 697th jared-hughes 730 144 80ms 9 Mar 2024 698th zakariamouhid 728 66 11ms 18 May 2023 698th FlorianCassayre 🇫🇷 728 66 62ms 4 Jun 2024 698th helbling 🇨🇭 728 66 9ms 9 Sep 2024 701st sstadick 728 71 23ms 20 Feb 2018 701st biotinker 728 71 24ms 20 Feb 2018 701st gregadoff 728 71 23ms 20 Feb 2018 701st tcoard 728 71 23ms 20 Feb 2018 701st bkshrader 728 71 24ms 30 Dec 2018 701st GolfingSuccess 🇬🇷 728 71 23ms 27 May 2019 701st michelebastione 🇮🇹 728 71 23ms 30 Jun 2019 701st thisishowmymindworks 🇳🇴 728 71 9ms 17 Oct 2020 701st LlamaLad7 🇬🇧 728 71 23ms 17 Jan 2021 701st georgehulme 728 71 24ms 27 Jan 2022 701st LeeCamp 728 71 23ms 15 Feb 2022 701st andre-de-lorde 728 71 24ms 7 Jun 2022 701st cbondurant 728 71 12ms 6 Jul 2022 701st dokutan 728 71 23ms 1 Jun 2024 701st Bulmenisaurus 728 71 22ms 19 Jun 2024 716th HPWiz 🇳🇿 728 73 111ms 20 Nov 2023 717th pardouin 🇫🇷 726 163 2,289ms 28 Mar 2025 718th Shanethegamer 🇺🇸 725 69 419ms 16 Jan 2024 719th GolfingSuccess 🇬🇷 725 812 641ms 10 Aug 2022 720th annaproxy 724 47 103ms 27 Aug 2022 First Prev 641–720 of 2,433 Next Last