The Calendar hole will go live in approximately 13 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 800th error256 0 64 110ms 21 Nov 2024 800th error256 0 64 18ms 21 Nov 2024 800th emgordon154 0 64 5ms 26 Nov 2024 800th Liniarc 0 64 12ms 26 Nov 2024 800th MeWhenI 🇻🇦 0 64 49ms 12 Dec 2024 800th Chinay-Domitrix 🇺🇸 0 64 4,595ms 18 Apr 2025 800th luuumine 🇫🇷 0 64 17ms 16 Oct 2025 800th GolfingSuccess 🇬🇷 0 64 3ms 12 Nov 2025 800th GolfingSuccess 🇬🇷 0 64 150ms 16 days ago 800th Shanethegamer 🇺🇸 0 64 157ms 14 days ago 800th GolfingSuccess 🇬🇷 0 64 86ms 2 days ago 800th amazingalek 0 64 12ms 2 days ago 813th Shanethegamer 🇺🇸 0 65 7ms 20 Nov 2024 813th stefangimmillaro 0 65 10ms 20 Nov 2024 813th kg583 🇺🇸 0 65 13ms 21 Nov 2024 813th khvdm 0 65 11ms 21 Nov 2024 813th edsrzf 🇳🇿 0 65 10ms 21 Nov 2024 813th hallvabo 🇳🇴 0 65 13ms 24 Nov 2024 813th ovs-code 🇩🇪 0 65 13ms 25 Nov 2024 813th GolfingSuccess 🇬🇷 0 65 11ms 25 Nov 2024 813th AlephSquirrel 0 65 11ms 25 Nov 2024 813th AlephSquirrel 0 65 50ms 25 Nov 2024 813th pardouin 🇫🇷 0 65 12ms 25 Nov 2024 813th btnlq 0 65 12ms 26 Nov 2024 813th CaedenHarper 🇨🇦 0 65 10ms 26 Nov 2024 813th emgordon154 0 65 11ms 26 Nov 2024 813th inventshah 0 65 12ms 26 Nov 2024 813th sean-niemann 🇺🇸 0 65 126ms 26 Nov 2024 813th stefangimmillaro 0 65 129ms 26 Nov 2024 813th duckyluuk 🇳🇱 0 65 11ms 26 Nov 2024 813th m-tkach 🇺🇦 0 65 13ms 26 Nov 2024 813th ovs-code 🇩🇪 0 65 2ms 26 Nov 2024 813th Alex-x90 🇺🇸 0 65 10ms 28 Nov 2024 813th lifthrasiir 🇰🇷 0 65 11ms 30 Nov 2024 813th zacjl 0 65 14ms 1 Dec 2024 813th zacjl 0 65 6ms 1 Dec 2024 813th sisyphus-ppcg 🇦🇺 0 65 10ms 2 Dec 2024 813th JunkIce 0 65 13ms 3 Dec 2024 813th SirBogman 🇺🇸 0 65 10ms 3 Dec 2024 813th xsot 🇸🇬 0 65 12ms 4 Dec 2024 813th ndren 0 65 14ms 5 Dec 2024 813th CornerMercury 🇬🇧 0 65 12ms 5 Dec 2024 813th lukegustafson 🇺🇸 0 65 12ms 7 Dec 2024 813th Europe2048 0 65 10ms 7 Dec 2024 813th neel11235813 0 65 10ms 9 Dec 2024 813th Seek64 🇩🇪 0 65 10ms 10 Dec 2024 813th MeWhenI 🇻🇦 0 65 3ms 11 Dec 2024 813th antimon2 🇯🇵 0 65 12ms 16 Dec 2024 813th error256 0 65 8ms 16 Dec 2024 813th edsrzf 🇳🇿 0 65 9ms 18 Dec 2024 813th bizy-coder 0 65 13ms 28 Dec 2024 813th Bulmenisaurus 0 65 10ms 1 Jan 2025 813th m-tkach 🇺🇦 0 65 127ms 3 Jan 2025 813th b-illy 🇬🇧 0 65 11ms 4 Jan 2025 813th emgordon154 0 65 7ms 11 Jan 2025 813th CLOStrophobic 🇮🇹 0 65 10ms 22 Jan 2025 813th prplz 🇦🇺 0 65 10ms 23 Jan 2025 813th kg583 🇺🇸 0 65 7ms 23 Jan 2025 813th CLOStrophobic 🇮🇹 0 65 6ms 23 Jan 2025 813th sean-niemann 🇺🇸 0 65 11ms 23 Jan 2025 813th mathisfun271 0 65 10ms 25 Jan 2025 813th aliberro39109 0 65 10ms 25 Jan 2025 813th Natanaelel 🇸🇪 0 65 10ms 26 Jan 2025 813th Shanethegamer 🇺🇸 0 65 10ms 30 Jan 2025 813th firegene 🇮🇪 0 65 13ms 30 Jan 2025 813th Lydxn 🇨🇦 0 65 10ms 31 Jan 2025 813th commandblockguy 🇺🇸 0 65 12ms 2 Feb 2025 813th GolfingSuccess 🇬🇷 0 65 7ms 3 Feb 2025 813th bricknellj 0 65 10ms 5 Feb 2025 813th qpwoeirut 0 65 4,572ms 7 Feb 2025 813th xyangst 0 65 11ms 14 Feb 2025 813th emgordon154 0 65 48ms 17 Feb 2025 813th GolfingSuccess 🇬🇷 0 65 127ms 6 Mar 2025 813th Jacob385 0 65 3ms 19 Mar 2025 813th 4atj 0 65 10ms 10 Apr 2025 813th orthoplex 🇨🇽 0 65 11ms 16 Apr 2025 813th MeWhenI 🇻🇦 0 65 14ms 17 Apr 2025 813th Mukundan314 0 65 13ms 17 Apr 2025 813th MeWhenI 🇻🇦 0 65 7ms 17 Apr 2025 813th DialFrost 🇸🇬 0 65 6ms 17 Apr 2025 First Prev 801–880 of 3,006 Next Last