The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
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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 481st kg583 🇺🇸 801 126 6ms 26 Oct 2024 482nd h3ra993huskp 🇯🇵 801 133 451ms 22 days ago 483rd m-tkach 🇺🇦 800 137 62ms 15 Jan 2022 483rd sean-niemann 🇺🇸 800 137 78ms 3 Feb 2024 485th MeWhenI 🇻🇦 799 101 4ms 23 May 2023 486th mtirado1 799 108 2ms 6 May 2023 487th edsrzf 🇳🇿 798 114 7ms 22 Aug 2025 488th MeWhenI 🇻🇦 798 137 2ms 12 Sep 2022 489th typeswitch-dev 🇵🇹 797 121 8ms 14 Aug 2023 490th Shanethegamer 🇺🇸 796 84 79ms 9 Jun 2022 491st Shanethegamer 🇺🇸 796 168 25ms 28 Apr 2022 492nd Shanethegamer 🇺🇸 795 159 30ms 20 Jul 2023 493rd igmcdowell 794 89 10ms 24 Feb 2022 493rd inventshah 794 89 8ms 21 Jun 2022 493rd olleicua 🇺🇸 794 89 9ms 3 Feb 2024 493rd kpal81xd 794 89 9ms 15 Sep 2024 493rd KatieLG 🇬🇧 794 89 9ms 5 Oct 2025 498th sean-niemann 🇺🇸 794 118 2ms 3 Feb 2024 499th Yewzir 🇧🇪 794 185 1,707ms 21 May 2024 500th gitbedd 🇬🇧 793 87 10ms 10 Jan 2022 500th yzhs 🇩🇪 793 87 11ms 21 Mar 2022 500th CheeseCake628 🇳🇴 793 87 10ms 16 Feb 2023 500th HumanoidCPU 793 87 10ms 2 Mar 2025 504th stefangimmillaro 792 152 145ms 28 Oct 2023 505th dokutan 791 79 400ms 15 Aug 2024 505th Babafaba 791 79 340ms 7 Nov 2025 507th kg583 🇺🇸 791 102 4ms 22 days ago 508th edsrzf 🇳🇿 790 160 32ms 5 May 2025 508th m-tkach 🇺🇦 790 160 32ms 5 May 2025 510th Shanethegamer 🇺🇸 789 115 342ms 21 Apr 2022 511th error256 789 238 506ms 18 Apr 2025 512th LHLaurini 🇧🇷 788 119 1ms 17 Jul 2024 512th solisolu 788 119 2ms 27 days ago 514th Steffan153 🇫🇮 787 57 72ms 29 Aug 2024 514th pardouin 🇫🇷 787 57 58ms 2 Sep 2025 516th prplz 🇦🇺 787 70 287ms 19 Jan 2022 516th SirBogman 🇺🇸 787 70 232ms 19 May 2022 518th ovs-code 🇩🇪 786 85 83ms 27 May 2024 519th ovs-code 🇩🇪 786 153 234ms 21 Jun 2023 520th weliveinhell 🇭🇹 785 90 8ms 11 Jan 2024 521st KrausRaus 🇺🇸 785 106 4ms 11 Nov 2023 522nd sean-niemann 🇺🇸 785 127 40ms 1 Dec 2023 523rd Lydxn 🇨🇦 784 53 3ms 27 Feb 2023 524th CaedenHarper 🇨🇦 784 78 758ms 30 Sep 2025 525th tomh1012 784 98 396ms 31 Jan 2022 525th pkim 784 98 358ms 6 Apr 2023 525th danielxbauer 784 98 356ms 6 Apr 2023 525th meinsiedler 784 98 363ms 6 Apr 2023 525th postie77 784 98 372ms 8 May 2023 530th MeWhenI 🇻🇦 783 112 158ms 4 Aug 2023 531st Salutations45 781 66 1ms 2 Jan 2025 532nd GrayJoKing 🇦🇺 781 93 70ms 9 Dec 2023 533rd lynn 781 154 153ms 11 Mar 2022 533rd The3gs 781 154 159ms 18 Aug 2023 535th DialFrost 🇸🇬 781 166 41ms 7 May 2025 536th adyache 🇺🇸 779 91 8ms 2 Aug 2023 537th edsrzf 🇳🇿 779 133 1,295ms 26 Apr 2025 538th DialFrost 🇸🇬 779 241 474ms 18 Apr 2025 539th msbranicky 778 112 2ms 10 Oct 2023 540th adamnielson42 🇺🇸 777 91 9ms 26 Apr 2023 540th luuumine 🇫🇷 777 91 9ms 12 Nov 2025 542nd AlephSquirrel 777 130 6ms 21 Oct 2024 543rd LHLaurini 🇧🇷 777 141 59ms 17 Jul 2024 544th Skleni 776 99 366ms 6 Apr 2023 545th DialFrost 🇸🇬 776 113 101ms 24 May 2025 546th hellwue 775 89 10ms 8 Feb 2023 546th elgan65536 775 89 17ms 29 Mar 2024 546th AdamMorris377 775 89 10ms 29 Jul 2024 546th RaBa21 🇭🇺 775 89 17ms 19 Jul 2025 550th MichalMarsalek 🇨🇿 775 117 360ms 21 Apr 2022 551st retrohun 775 121 2ms 30 Dec 2022 551st abc7-12 775 121 1ms 26 Jun 2024 553rd dokutan 774 79 763ms 8 Sep 2025 554th xsot 🇸🇬 773 58 39ms 6 Jul 2025 554th sean-niemann 🇺🇸 773 58 32ms 3 Aug 2025 556th kmathis22 772 138 444ms 30 Oct 2025 557th emgordon154 771 81 395ms 1 Aug 2024 558th clockworknazo 771 85 4ms 25 Mar 2023 559th call23re 771 112 2ms 12 Jan 2022 560th primo-ppcg 🇹🇭 771 131 6ms 20 Jan 2023 First Prev 481–560 of 1,556 Next Last