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 561st sean-niemann 🇺🇸 830 110 658ms 15 Jul 2025 562nd DialFrost 🇸🇬 829 56 151ms 3 Aug 2024 563rd inventshah 829 58 10ms 27 May 2021 563rd emgordon154 829 58 9ms 30 Nov 2021 563rd daniel-pedersen 🇸🇪 829 58 9ms 6 Mar 2022 563rd DialFrost 🇸🇬 829 58 24ms 29 Jul 2024 567th flawr 827 69 124ms 2 Jan 2019 568th DialFrost 🇸🇬 827 89 552ms 29 Jul 2024 569th cduerm 827 129 275ms 12 May 2020 570th billings7 🇬🇧 822 110 395ms 21 Nov 2021 570th Yewzir 🇧🇪 822 110 430ms 6 Jun 2024 572nd o0lit3 🇺🇸 821 28 41ms 29 Sep 2021 572nd tidalDisruptionEvent 🇨🇦 821 28 40ms 10 Mar 2023 572nd CatsAreFluffy 821 28 61ms 6 Jan 2024 575th jhu04 821 63 9ms 24 Sep 2022 575th Command-Master 821 63 9ms 23 Sep 2023 577th MeWhenI 🇻🇦 821 130 274ms 9 Feb 2023 578th commandblockguy 🇺🇸 820 61 415ms 15 Jan 2024 579th Steffan153 🇫🇮 817 59 5ms 12 Dec 2023 579th dokutan 817 59 5ms 31 Dec 2023 579th DialFrost 🇸🇬 817 59 6ms 16 Dec 2024 579th kg583 🇺🇸 817 59 5ms 15 Sep 2025 583rd SirBogman 🇺🇸 817 72 1,283ms 4 Jan 2022 584th MeWhenI 🇻🇦 816 101 1,516ms 7 Nov 2025 584th edsrzf 🇳🇿 816 101 543ms 17 Nov 2025 586th annaproxy 815 44 2,477ms 28 Jan 2022 587th piano-miles 815 59 15ms 19 Feb 2023 587th CatsAreFluffy 815 59 10ms 19 Feb 2023 589th namelessiw 814 111 377ms 21 Jul 2025 590th edsrzf 🇳🇿 813 140 124ms 8 hours ago 591st DialFrost 🇸🇬 810 125 51ms 7 May 2025 592nd LucasBertocchini 808 64 9ms 11 Dec 2020 592nd MaxElf999 808 64 10ms 15 Feb 2024 592nd KasperKivimaeki 🇫🇮 808 64 75ms 16 Jul 2025 595th DialFrost 🇸🇬 808 102 537ms 26 Sep 2025 595th stefangimmillaro 808 102 565ms 6 Oct 2025 597th elgan65536 808 132 283ms 18 Nov 2023 598th albanian-laundromat 808 141 142ms 8 hours ago 599th namelessiw 807 62 420ms 5 Mar 2024 600th SirBogman 🇺🇸 807 112 446ms 21 Nov 2021 601st ovs-code 🇩🇪 805 62 5ms 11 Mar 2023 602nd ovs-code 🇩🇪 804 60 381ms 10 Dec 2023 603rd DialFrost 🇸🇬 803 66 925ms 23 Aug 2024 604th cywong-amino 🇭🇰 801 60 37ms 2 Jul 2020 604th didion0 🇺🇸 801 60 10ms 9 Feb 2022 604th dmrichwa 🇺🇸 801 60 15ms 15 Jun 2022 607th annaproxy 800 113 470ms 5 Apr 2022 607th CaedenHarper 🇨🇦 800 113 923ms 19 Oct 2025 609th MeWhenI 🇻🇦 797 89 125ms 15 Oct 2022 610th bwenstar 795 65 10ms 9 Aug 2022 610th nstearns96 🇬🇧 795 65 10ms 15 Sep 2023 610th GeorgeStechman 🇬🇧 795 65 44ms 6 Jan 2024 613th prplz 🇦🇺 794 56 553ms 25 Jun 2020 614th namelessiw 793 104 449ms 7 Oct 2025 615th roguh 🇬🇹 792 63 5ms 26 Jan 2024 616th MeWhenI 🇻🇦 791 43 44ms 29 Dec 2024 617th primo-ppcg 🇹🇭 791 133 73ms 11 days ago 617th sean-niemann 🇺🇸 791 133 68ms 118 mins ago 619th DialFrost 🇸🇬 790 161 1,713ms 15 Sep 2025 620th primo-ppcg 🇹🇭 787 37 38ms 6 Dec 2020 621st ovs-code 🇩🇪 787 59 235ms 3 Aug 2024 621st emgordon154 787 59 123ms 10 Aug 2024 623rd Yax42 🇫🇷 786 115 421ms 25 Dec 2024 624th duckyluuk 🇳🇱 785 105 420ms 25 Sep 2025 625th SirBogman 🇺🇸 785 134 63ms 25 May 2023 626th petar-donchev 783 66 76ms 3 Sep 2019 626th za3k 783 66 11ms 19 Oct 2022 626th qpwoeirut 783 66 12ms 14 Aug 2025 629th lifthrasiir 🇰🇷 783 316 1,507ms 15 Dec 2024 630th jared-hughes 782 73 123ms 15 Sep 2023 631st MeWhenI 🇻🇦 781 57 342ms 14 Jul 2024 632nd ovs-code 🇩🇪 780 91 172ms 9 Jul 2024 632nd DialFrost 🇸🇬 780 91 142ms 23 Mar 2025 634th MeWhenI 🇻🇦 779 68 961ms 12 May 2023 635th KasperKivimaeki 🇫🇮 779 135 66ms 20 Nov 2025 636th Herbert00709 🇵🇱 777 133 13ms 7 Jun 2024 637th acotis 777 184 153ms 28 Jun 2025 638th MeWhenI 🇻🇦 776 39 46ms 13 Jul 2024 639th itsh01 775 62 53ms 14 Sep 2022 639th TheRealOhead 🇺🇸 775 62 9ms 30 Mar 2023 First Prev 561–640 of 2,433 Next Last