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 881st o0lit3 🇺🇸 656 76 6ms 14 Apr 2021 881st CaedenHarper 🇨🇦 656 76 6ms 10 Aug 2025 881st snoozingnewt 🇨🇦 656 76 6ms 16 Oct 2025 884th LostSyntax21 🇬🇧 654 52 56ms 9 Nov 2025 885th trist224 🇫🇷 654 79 12ms 25 Dec 2022 885th TaserTheFox 🇺🇸 654 79 24ms 27 Mar 2023 885th jacekwladzinski 654 79 11ms 6 Oct 2025 885th nulzo 654 79 12ms 19 Oct 2025 889th DestyNova 🇮🇪 654 81 1,112ms 25 days ago 890th yzhs 🇩🇪 652 55 245ms 13 Sep 2020 891st Alex-x90 🇺🇸 650 159 12ms 2 Apr 2025 892nd CaedenHarper 🇨🇦 648 50 672ms 23 Oct 2025 893rd emgordon154 647 165 263ms 18 Jan 2025 894th MeWhenI 🇻🇦 646 77 4,506ms 2 Dec 2024 895th alangodfrey 646 80 24ms 10 Jun 2019 895th GalladeGuy 🇺🇸 646 80 12ms 23 May 2020 895th kyleclaassen 646 80 12ms 25 May 2023 895th keelimeguy 🇺🇸 646 80 12ms 6 Nov 2023 895th robin-scragg 646 80 23ms 25 Oct 2025 900th cure-honey 🇯🇵 643 166 277ms 24 Jun 2021 901st yzhs 🇩🇪 641 89 113ms 24 Jul 2021 902nd iznax 641 141 439ms 21 Nov 2021 903rd Andriamanitra 🇫🇮 640 56 208ms 23 Sep 2022 904th snoozingnewt 🇨🇦 639 36 32ms 16 Oct 2025 905th Yewzir 🇧🇪 639 111 123ms 19 Feb 2024 906th Yewzir 🇧🇪 639 167 318ms 5 May 2024 907th Starwort 🇬🇧 638 81 12ms 29 Dec 2019 907th guliyevemil1 🇦🇿 638 81 12ms 16 Apr 2020 907th redbeancola 638 81 12ms 11 Oct 2021 907th stertooy 🇧🇪 638 81 11ms 11 Jun 2024 907th 0dyse 638 81 12ms 29 Apr 2025 912th m-tkach 🇺🇦 636 279 63ms 27 Jun 2022 913th AlephSquirrel 634 212 157ms 3 Aug 2023 914th janbehrens 🇩🇪 633 76 40ms 31 May 2022 915th Yewzir 🇧🇪 633 201 1,680ms 1 Jun 2024 916th MeWhenI 🇻🇦 630 202 1,669ms 7 Nov 2025 917th cure-honey 🇯🇵 627 283 62ms 8 Jul 2021 918th hiddicop 🇸🇪 623 83 12ms 30 Jan 2021 918th cbrt-x 623 83 12ms 26 Sep 2021 918th AkashTandon167 623 83 9ms 1 Nov 2021 918th jamespeilunli 623 83 23ms 29 Dec 2021 918th eiburns 623 83 9ms 10 May 2023 918th Vaekor 623 83 9ms 9 Jul 2023 918th WillowWispy 623 83 9ms 20 Mar 2025 925th dokutan 622 946 1ms 22 Apr 2024 926th somebody1234 618 58 268ms 11 Dec 2018 926th voytxt 🇨🇿 618 58 2,640ms 17 Feb 2023 928th janbehrens 🇩🇪 618 119 585ms 1 May 2023 929th primo-ppcg 🇹🇭 617 128 339ms 31 May 2021 930th kirbyyourmom 🇬🇧 615 84 11ms 8 Mar 2021 930th ToE42 615 84 12ms 7 Sep 2021 930th JunkIce 615 84 12ms 1 Oct 2024 933rd andersk 🇺🇸 608 59 2,586ms 4 Mar 2023 933rd mjecke 608 59 2,194ms 3 Jul 2023 935th thisishowmymindworks 🇳🇴 608 79 15ms 17 Oct 2020 936th aiarzhantsev 608 85 725ms 14 Oct 2022 936th glassala 608 85 12ms 25 Dec 2024 938th Shanethegamer 🇺🇸 607 56 44ms 27 Jun 2022 939th Chinay-Domitrix 🇺🇸 606 82 4,425ms 15 Apr 2025 940th Lydxn 🇨🇦 606 136 416ms 4 Apr 2022 941st jgbaldwinbrown 606 176 349ms 24 May 2022 942nd snoozingnewt 🇨🇦 605 972 2ms 26 Jan 2025 943rd BBoehm 🇩🇪 604 142 2,604ms 26 Feb 2021 944th jared-hughes 602 137 441ms 24 Sep 2025 945th juliansiebert 🇩🇪 601 74 516ms 11 Dec 2023 946th twocatsinatrenchcoat 601 86 24ms 15 Apr 2022 946th Drew-j-Smith 601 86 12ms 11 Jan 2023 946th ComputerKWasTaken 🇺🇸 601 86 12ms 5 Sep 2024 946th RaBa21 🇭🇺 601 86 26ms 18 Jul 2025 946th cthierfelder 🇲🇨 601 86 13ms 4 Sep 2025 951st dokutan 600 54 680ms 30 Aug 2025 952nd Lv0Sys 🇵🇱 599 178 275ms 6 Jun 2025 953rd 0dyse 598 60 242ms 7 May 2025 954th JunkIce 595 84 438ms 3 Dec 2024 955th pandapawskat 594 49 9ms 20 Sep 2021 956th lmeuser 594 87 11ms 2 Dec 2017 956th rschwa6308 🇺🇸 594 87 184ms 4 Feb 2022 956th dionjw 594 87 12ms 22 Mar 2022 956th vhoulbreque 🇫🇷 594 87 12ms 13 Aug 2022 956th nurinbat 594 87 11ms 19 Sep 2023 First Prev 881–960 of 2,433 Next Last