The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Evil Numbers in Julia in chars. 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 1st primo-ppcg 🇹🇭 1,000 27 239ms 23 Aug 2019 1st HPWiz 🇳🇿 1,000 27 239ms 23 Aug 2019 1st JayXon 🇺🇸 1,000 27 272ms 16 Feb 2021 1st Lydxn 🇨🇦 1,000 27 293ms 29 Sep 2022 1st Steffan153 🇫🇮 1,000 27 292ms 25 Apr 2023 1st sean-niemann 🇺🇸 1,000 27 279ms 27 Dec 2024 7th antimon2 🇯🇵 931 29 522ms 11 Jul 2024 8th sisyphus-ppcg 🇦🇺 871 31 354ms 10 Feb 2021 9th Shanethegamer 🇺🇸 818 33 339ms 22 Mar 2023 9th ovs-code 🇩🇪 818 33 290ms 12 Mar 2024 11th alemelis 794 34 591ms 27 Sep 2024 12th ETHproductions 🇺🇸 771 35 312ms 16 Aug 2019 13th MeWhenI 🇻🇦 750 36 302ms 5 Aug 2023 14th pardouin 🇫🇷 730 37 443ms 5 Sep 2024 15th cure-honey 🇯🇵 711 38 312ms 14 Jun 2021 15th MarcMush 🇫🇷 711 38 376ms 13 Jan 2022 15th DialFrost 🇸🇬 711 38 421ms 18 Nov 2022 15th Yewzir 🇧🇪 711 38 419ms 20 Jan 2024 15th Daniel-Ellison 711 38 368ms 15 Aug 2025 20th detrumi 🇳🇱 675 40 297ms 24 Oct 2020 20th Codsilla 🇨🇦 675 40 284ms 3 Jul 2022 20th janbehrens 🇩🇪 675 40 372ms 11 Jul 2023 20th Andriamanitra 🇫🇮 675 40 372ms 28 Jul 2023 20th stellartux 675 40 356ms 24 Dec 2023 20th emgordon154 675 40 232ms 5 Oct 2024 20th Ripick 675 40 450ms 24 Jun 2025 20th snoozingnewt 🇨🇦 675 40 257ms 9 days ago 28th laserb 643 42 399ms 25 Jan 2020 28th rollershutter 643 42 407ms 3 Jul 2024 30th dokutan 628 43 334ms 21 Jul 2023 30th davbass 🇮🇹 628 43 246ms 21 Aug 2023 32nd bciccarelli 614 44 302ms 11 Sep 2023 32nd msbranicky 614 44 296ms 15 Jan 2024 34th crhewitt 600 45 288ms 27 Jul 2024 35th jacobpake 574 47 352ms 9 Aug 2020 36th dloscutoff 540 50 337ms 23 Nov 2018 37th mossr 🇺🇸 529 51 364ms 24 Feb 2021 38th DeniedPyro 🇨🇦 500 54 488ms 29 Oct 2021 39th RustemB 🇷🇺 482 56 345ms 4 May 2021 40th evetion 474 57 277ms 14 Nov 2020 40th zvnkk 474 57 471ms 15 Jun 2024 42nd roguh 🇬🇹 458 59 291ms 22 Jan 2024 43rd codejohnson 403 67 319ms 29 Apr 2019 44th masflam 346 78 447ms 20 Aug 2020 44th kurkale6ka 346 78 233ms 27 Jul 2021 44th theunofficialcoder 346 78 217ms 1 Sep 2021 44th HopelessSoap 346 78 272ms 21 Oct 2022 44th HumanoidCPU 346 78 184ms 14 May 2024 44th Mabeloid 🇳🇴 346 78 218ms 17 Sep 2024 44th CaedenHarper 🇨🇦 346 78 194ms 1 Feb 2025 51st retrohun 338 80 148ms 21 Dec 2018 51st rucin93 🇵🇱 338 80 173ms 26 Apr 2025 53rd JRaspass 🇬🇧 333 81 200ms 17 Mar 2021 54th anter69 🇭🇺 290 93 263ms 16 Oct 2024 55th taigua 281 96 310ms 19 Aug 2020 56th KatieLG 🇬🇧 278 97 189ms 19 days ago 57th xkacer 🇨🇿 265 102 190ms 22 Nov 2020 57th Anonymousellama21 265 102 158ms 3 Jun 2021 57th mokymok 🇺🇸 265 102 170ms 9 Nov 2021 60th Schmitt-Very-Cool 260 104 169ms 31 Jul 2023 61st KatieLG-Transpiler 🇬🇧 181 149 203ms 23 Jun 2022 1–61 of 61