The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Arabic to Roman 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 241st MeWhenI 🇻🇦 884 171 112ms 16 Jun 2023 242nd clockworknazo 883 140 19ms 27 Feb 2023 243rd primo-ppcg 🇹🇭 883 186 167ms 9 Jan 2020 244th pardouin 🇫🇷 881 118 555ms 27 Jun 2024 244th sean-niemann 🇺🇸 881 118 555ms 6 Jun 2025 246th primo-ppcg 🇹🇭 881 131 44ms 24 Jun 2022 247th davitf 881 137 20ms 28 Jul 2020 247th orthoplex 🇨🇽 881 137 23ms 13 Jan 2022 249th JayXon 🇺🇸 879 93 65ms 27 Dec 2024 250th sean-niemann 🇺🇸 879 108 26ms 31 Oct 2023 251st Lydxn 🇨🇦 878 89 66ms 17 Apr 2022 251st JayXon 🇺🇸 878 89 66ms 17 Apr 2022 251st prplz 🇦🇺 878 89 65ms 17 Apr 2022 251st MeWhenI 🇻🇦 878 89 68ms 18 Apr 2022 251st sean-niemann 🇺🇸 878 89 65ms 22 Jun 2022 251st primo-ppcg 🇹🇭 878 89 68ms 26 Jun 2022 251st emplv 🇱🇻 878 89 68ms 30 Jun 2022 251st Steffan153 🇫🇮 878 89 68ms 20 Feb 2023 251st MostParsingVex 878 89 71ms 10 Oct 2024 251st DialFrost 🇸🇬 878 89 72ms 23 Dec 2024 251st Natanaelel 🇸🇪 878 89 81ms 7 May 2025 251st edsrzf 🇳🇿 878 89 65ms 25 Jul 2025 263rd GrayJoKing 🇦🇺 878 139 558ms 14 Jul 2024 264th edsrzf 🇳🇿 877 122 13ms 22 Jul 2025 265th Steffan153 🇫🇮 877 141 16ms 27 Feb 2023 265th xsot 🇸🇬 877 141 10ms 29 Mar 2024 267th IanUtley 875 137 47ms 4 Nov 2023 268th nwellnhof 🇩🇪 875 138 19ms 28 Jun 2023 268th minhtrancccp 875 138 19ms 26 Nov 2024 270th DialFrost 🇸🇬 875 142 119ms 15 Apr 2025 271st nwellnhof 🇩🇪 875 154 416ms 30 May 2024 272nd Steffan153 🇫🇮 874 119 597ms 30 May 2024 273rd edsrzf 🇳🇿 874 164 14ms 21 Jul 2025 274th primo-ppcg 🇹🇭 873 109 1,217ms 27 Mar 2019 275th edsrzf 🇳🇿 872 158 1,403ms 22 Jul 2025 276th pardouin 🇫🇷 871 104 1,144ms 26 Aug 2025 277th DialFrost 🇸🇬 871 142 12ms 15 Apr 2025 278th m-tkach 🇺🇦 870 201 137ms 10 Jun 2025 279th lynn 868 168 350ms 5 Oct 2021 279th HPWiz 🇳🇿 868 168 364ms 17 Apr 2022 281st primo-ppcg 🇹🇭 867 176 44ms 14 Jan 2025 282nd edsrzf 🇳🇿 865 188 32ms 22 Jul 2025 283rd Steffan153 🇫🇮 863 105 1,274ms 7 Apr 2023 284th Irratix 🇳🇱 862 56 21ms 28 Aug 2021 284th inverseLorentz 🇦🇺 862 56 19ms 9 Apr 2024 284th MostParsingVex 862 56 21ms 13 Oct 2024 287th sean-niemann 🇺🇸 862 132 493ms 31 Aug 2025 288th Seek64 🇩🇪 862 140 27ms 3 Feb 2025 289th MeWhenI 🇻🇦 862 145 71ms 29 Dec 2024 290th DialFrost 🇸🇬 861 111 513ms 16 Apr 2025 291st Steffan153 🇫🇮 860 95 49ms 30 May 2024 292nd xsot 🇸🇬 860 103 1,147ms 15 Nov 2025 293rd xsot 🇸🇬 860 149 15ms 10 Oct 2023 294th Steffan153 🇫🇮 860 189 31ms 11 Apr 2023 295th SirBogman 🇺🇸 859 79 611ms 5 Oct 2020 296th canissimia 🇦🇶 859 195 14ms 14 Aug 2021 297th nwellnhof 🇩🇪 857 107 24ms 30 May 2024 297th JayXon 🇺🇸 857 107 13ms 21 Sep 2024 299th MeWhenI 🇻🇦 857 124 85ms 25 Aug 2023 300th emgordon154 857 204 241ms 22 May 2025 301st Yewzir 🇧🇪 856 80 52ms 22 Dec 2023 301st msbranicky 856 80 46ms 24 Dec 2023 303rd Steffan153 🇫🇮 856 125 11ms 20 Aug 2023 304th marcin7Cd 856 141 23ms 27 Jun 2020 304th ryyyn 🇺🇸 856 141 21ms 9 Oct 2025 306th primo-ppcg 🇹🇭 856 161 1,388ms 30 Nov 2021 306th edsrzf 🇳🇿 856 161 106ms 6 days ago 308th JayXon 🇺🇸 854 106 1,244ms 21 Dec 2021 309th JayXon 🇺🇸 852 120 11ms 4 May 2022 310th AlephSquirrel 852 122 479ms 21 Jan 2024 311th kg583 🇺🇸 850 142 21ms 15 Mar 2024 311th bizy-coder 850 142 39ms 23 days ago 313th massung 847 57 17ms 26 Mar 2019 313th FlorianCassayre 🇫🇷 847 57 20ms 12 Sep 2023 315th typeswitch-dev 🇵🇹 847 172 5ms 22 Jul 2023 316th edsrzf 🇳🇿 846 107 1,182ms 1 Sep 2025 317th sean-niemann 🇺🇸 845 140 8ms 15 Jan 2024 318th MeWhenI 🇻🇦 845 260 1,774ms 22 Apr 2024 319th ZakkkkAttackkkk 🇵🇭 844 143 21ms 14 Nov 2021 319th bricknellj 844 143 18ms 3 Nov 2022 First Prev 241–320 of 1,864 Next Last