The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Roman to Arabic 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 157th MeWhenI 🇻🇦 930 62 39ms 24 Feb 2022 157th akshatj27 🇦🇶 930 62 48ms 5 Mar 2022 157th scpchicken 🇵🇼 930 62 48ms 5 Mar 2022 157th Irratix 🇳🇱 930 62 47ms 22 Mar 2022 157th sean-niemann 🇺🇸 930 62 59ms 7 May 2022 157th prplz 🇦🇺 930 62 42ms 8 Jun 2022 157th Steffan153 🇫🇮 930 62 38ms 28 Nov 2022 157th Natanaelel 🇸🇪 930 62 46ms 16 Feb 2023 157th Babafaba 930 62 49ms 5 Nov 2025 170th Lydxn 🇨🇦 930 76 73ms 17 Apr 2022 170th JayXon 🇺🇸 930 76 68ms 17 Apr 2022 170th m-tkach 🇺🇦 930 76 70ms 17 Apr 2022 170th prplz 🇦🇺 930 76 69ms 17 Apr 2022 170th MeWhenI 🇻🇦 930 76 69ms 18 Apr 2022 170th sean-niemann 🇺🇸 930 76 69ms 22 Jun 2022 170th primo-ppcg 🇹🇭 930 76 68ms 26 Jun 2022 170th emplv 🇱🇻 930 76 72ms 29 Jun 2022 170th Shanethegamer 🇺🇸 930 76 68ms 30 Jun 2022 170th Steffan153 🇫🇮 930 76 69ms 22 Jan 2023 170th MostParsingVex 930 76 67ms 10 Oct 2024 170th DialFrost 🇸🇬 930 76 65ms 20 Dec 2024 170th error256 930 76 70ms 5 Jan 2025 170th edsrzf 🇳🇿 930 76 66ms 25 Jul 2025 170th dokutan 930 76 66ms 8 Sep 2025 170th snoozingnewt 🇨🇦 930 76 66ms 18 Oct 2025 186th nwellnhof 🇩🇪 927 82 16ms 13 May 2023 187th kg583 🇺🇸 926 85 593ms 5 Jun 2025 188th HPWiz 🇳🇿 925 48 41ms 4 Oct 2021 189th xsot 🇸🇬 924 69 8ms 23 May 2023 190th Lydxn 🇨🇦 922 98 14ms 5 Jun 2024 190th JayXon 🇺🇸 922 98 15ms 7 Jun 2024 192nd JayXon 🇺🇸 922 111 512ms 25 Sep 2025 193rd JayXon 🇺🇸 921 92 3ms 23 Jan 2022 194th JayXon 🇺🇸 921 101 446ms 14 Jul 2023 195th primo-ppcg 🇹🇭 920 66 1,054ms 17 Jun 2020 195th btnlq 920 66 929ms 20 Dec 2020 195th JayXon 🇺🇸 920 66 889ms 28 Jun 2021 195th Lydxn 🇨🇦 920 66 932ms 12 May 2023 195th nwellnhof 🇩🇪 920 66 939ms 23 Jul 2023 200th ovs-code 🇩🇪 920 67 332ms 9 May 2024 200th DialFrost 🇸🇬 920 67 385ms 10 May 2024 202nd CaedenHarper 🇨🇦 919 39 131ms 26 Oct 2025 203rd DialFrost 🇸🇬 919 66 12ms 5 Jun 2025 203rd sean-niemann 🇺🇸 919 66 12ms 5 Jun 2025 205th sisyphus-ppcg 🇦🇺 919 69 1,087ms 23 Mar 2021 205th primo-ppcg 🇹🇭 919 69 1,116ms 23 Mar 2021 205th MeWhenI 🇻🇦 919 69 1,119ms 13 Nov 2022 205th ovs-code 🇩🇪 919 69 1,232ms 27 Jan 2024 209th Lydxn 🇨🇦 919 112 89ms 25 Jan 2024 210th Lydxn 🇨🇦 917 86 3,590ms 16 Apr 2024 211th HPWiz 🇳🇿 917 122 305ms 20 Jul 2021 211th JayXon 🇺🇸 917 122 327ms 20 Jul 2021 211th lynn 917 122 323ms 29 Nov 2021 211th xnor-gate 917 122 283ms 3 Jan 2022 211th Lydxn 🇨🇦 917 122 303ms 13 Jul 2022 216th ngn 🇧🇬 916 41 6ms 15 Jan 2022 216th zacjl 916 41 5ms 27 Jun 2025 216th 2bular 916 41 6ms 19 Sep 2025 219th nwellnhof 🇩🇪 915 63 49ms 6 Nov 2021 219th AbrahamJLR 🇻🇪 915 63 48ms 29 Jul 2025 221st DialFrost 🇸🇬 915 71 956ms 5 Sep 2025 221st edsrzf 🇳🇿 915 71 1,009ms 7 Sep 2025 223rd btnlq 915 88 378ms 13 Mar 2023 224th DialFrost 🇸🇬 914 101 101ms 24 May 2025 224th JayXon 🇺🇸 914 101 105ms 24 May 2025 224th sean-niemann 🇺🇸 914 101 104ms 25 May 2025 227th NewDefectus 🇮🇱 914 104 19ms 16 Oct 2021 228th Steffan153 🇫🇮 912 102 407ms 21 Jul 2024 229th primo-ppcg 🇹🇭 911 68 194ms 5 Oct 2020 230th primo-ppcg 🇹🇭 911 70 11ms 8 Nov 2022 230th DialFrost 🇸🇬 911 70 7ms 6 Jan 2025 232nd canissimia 🇦🇶 911 75 24ms 3 Aug 2022 233rd saito-ta 🇯🇵 911 87 620ms 23 Oct 2023 234th ovs-code 🇩🇪 911 93 3ms 11 Feb 2024 235th JayXon 🇺🇸 911 113 62ms 23 Jan 2022 236th JayXon 🇺🇸 909 88 107ms 28 May 2023 236th Lydxn 🇨🇦 909 88 103ms 30 Oct 2023 236th Shanethegamer 🇺🇸 909 88 109ms 30 Oct 2023 236th Steffan153 🇫🇮 909 88 105ms 31 Oct 2023 236th sean-niemann 🇺🇸 909 88 120ms 8 Apr 2025 First Prev 161–240 of 1,453 Next Last