The Calendar hole will go live in approximately 12 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 Bytes Time Submitted 158th bizy-coder 901 98 9ms 25 Jul 2024 158th sean-niemann 🇺🇸 901 98 16ms 28 Jan 2025 163rd canissimia 🇦🇶 900 74 31ms 13 Jul 2022 164th DialFrost 🇸🇬 900 119 466ms 24 Sep 2025 164th Yewzir 🇧🇪 900 119 662ms 24 Sep 2025 164th namelessiw 900 119 440ms 7 Oct 2025 167th jared-hughes 899 79 9ms 12 Jan 2022 167th ZakkkkAttackkkk 🇵🇭 899 79 9ms 9 Jun 2022 167th ovs-code 🇩🇪 899 79 9ms 29 Sep 2023 167th uttumuttu 🇫🇮 899 79 9ms 21 Dec 2023 167th neel11235813 899 79 9ms 25 Mar 2024 167th levinwinter 899 79 9ms 21 Oct 2025 173rd JayXon 🇺🇸 899 85 510ms 23 Jan 2024 173rd pardouin 🇫🇷 899 85 700ms 26 Sep 2024 175th xnor-gate 899 125 143ms 11 Jan 2022 176th JayXon 🇺🇸 899 148 267ms 11 Nov 2023 177th xsot 🇸🇬 898 69 725ms 18 Nov 2025 178th JayXon 🇺🇸 897 98 2ms 19 Feb 2024 178th sean-niemann 🇺🇸 897 98 2ms 19 Nov 2025 180th JayXon 🇺🇸 897 102 373ms 23 Jul 2025 180th edsrzf 🇳🇿 897 102 377ms 12 Sep 2025 182nd ovs-code 🇩🇪 897 105 1ms 17 Feb 2024 183rd Shanethegamer 🇺🇸 895 87 99ms 20 Oct 2022 183rd JayXon 🇺🇸 895 87 101ms 25 Oct 2022 183rd Steffan153 🇫🇮 895 87 98ms 24 Feb 2024 183rd sean-niemann 🇺🇸 895 87 108ms 23 Mar 2025 183rd edsrzf 🇳🇿 895 87 109ms 13 Oct 2025 188th ovs-code 🇩🇪 894 85 83ms 27 May 2024 188th DialFrost 🇸🇬 894 85 79ms 22 Jun 2024 188th Steffan153 🇫🇮 894 85 80ms 15 Aug 2024 188th sean-niemann 🇺🇸 894 85 82ms 6 Jul 2025 192nd nwellnhof 🇩🇪 893 149 269ms 23 Jun 2023 193rd AlephSquirrel 892 99 10ms 21 Jul 2023 193rd Seek64 🇩🇪 892 99 10ms 24 Sep 2024 193rd kg583 🇺🇸 892 99 10ms 19 days ago 193rd jared-hughes 892 99 9ms 19 days ago 197th JayXon 🇺🇸 892 126 122ms 22 Jun 2024 198th canissimia 🇦🇶 891 61 44ms 18 Jul 2022 199th Steffan153 🇫🇮 891 91 69ms 20 Sep 2023 200th rucin93 🇵🇱 890 84 136ms 31 Oct 2024 200th sean-niemann 🇺🇸 890 84 135ms 31 Oct 2024 202nd Steffan153 🇫🇮 889 87 406ms 21 Aug 2024 203rd GrayJoKing 🇦🇺 889 92 71ms 21 Jun 2024 204th JayXon 🇺🇸 889 117 97ms 21 May 2023 205th janbehrens 🇩🇪 888 80 10ms 24 Nov 2022 205th DayDun 🇸🇪 888 80 9ms 22 Jan 2023 205th tayloia 🇬🇧 888 80 9ms 16 May 2023 205th voytxt 🇨🇿 888 80 9ms 4 Feb 2024 205th Salutations45 888 80 9ms 27 Nov 2024 205th emgordon154 888 80 9ms 16 Feb 2025 211th inventshah 888 106 2ms 7 Aug 2024 212th KasperKivimaeki 🇫🇮 888 124 441ms 30 Jul 2025 213th clockworknazo 887 85 4ms 25 Mar 2023 213th edsrzf 🇳🇿 887 85 4ms 18 Nov 2025 215th lifthrasiir 🇰🇷 886 35 2ms 29 Nov 2024 216th ovs-code 🇩🇪 886 66 5ms 30 Oct 2024 216th emgordon154 886 66 6ms 6 Jun 2025 218th edsrzf 🇳🇿 886 92 4ms 24 Jul 2025 219th ScottHamper 885 121 440ms 19 days ago 220th JayXon 🇺🇸 884 109 473ms 24 Jul 2024 221st hallvabo 🇳🇴 883 100 10ms 11 Jan 2022 221st xsot 🇸🇬 883 100 12ms 21 Jul 2023 221st inventshah 883 100 10ms 3 Aug 2023 221st StefanHabel 🇨🇦 883 100 9ms 5 Sep 2023 221st neel11235813 883 100 9ms 9 Nov 2023 221st MeWhenI 🇻🇦 883 100 10ms 7 Dec 2023 221st lynn 883 100 9ms 21 Jun 2024 221st duckyluuk 🇳🇱 883 100 9ms 21 Jun 2024 221st DialFrost 🇸🇬 883 100 9ms 28 Jun 2024 221st Mukundan314 883 100 9ms 30 Apr 2025 221st ryyyn 🇺🇸 883 100 14ms 28 Oct 2025 221st CaedenHarper 🇨🇦 883 100 10ms 19 days ago 233rd sisyphus-ppcg 🇦🇺 883 104 8ms 19 Jul 2022 233rd m-tkach 🇺🇦 883 104 7ms 29 Mar 2023 233rd UnderKoen 🇳🇱 883 104 7ms 20 Apr 2023 236th edsrzf 🇳🇿 883 119 7ms 2 Mar 2025 237th Steffan153 🇫🇮 882 95 5ms 8 Aug 2024 238th Kacarott 🇦🇺 881 92 63ms 13 Sep 2024 239th JayXon 🇺🇸 881 125 2ms 25 Oct 2022 239th edsrzf 🇳🇿 881 125 2ms 5 Jul 2025 First Prev 161–240 of 1,567 Next Last