The Calendar hole will go live in approximately 10 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 319th vishwathg 844 143 379ms 8 Sep 2023 319th neel11235813 844 143 28ms 24 Feb 2024 319th ahmetdemirag 🇨🇾 844 143 21ms 9 Mar 2025 324th inventshah 842 160 422ms 24 Jan 2023 325th nwellnhof 🇩🇪 840 89 18ms 18 Oct 2022 326th GrayJoKing 🇦🇺 838 81 397ms 5 Oct 2020 327th Steffan153 🇫🇮 838 113 15ms 13 Aug 2024 328th TFeld00 🇩🇰 838 144 52ms 21 Apr 2022 328th jared-hughes 838 144 20ms 14 Mar 2023 328th MeWhenI 🇻🇦 838 144 46ms 17 Apr 2025 331st synt7x 🇺🇸 838 153 11ms 4 Jul 2025 332nd primo-ppcg 🇹🇭 835 298 1,142ms 13 Aug 2025 333rd sisyphus-ppcg 🇦🇺 834 98 50ms 25 Sep 2021 333rd sean-niemann 🇺🇸 834 98 56ms 14 Aug 2025 335th MeWhenI 🇻🇦 833 142 16ms 11 Oct 2023 336th GrayJoKing 🇦🇺 833 150 67ms 20 Nov 2025 337th DialFrost 🇸🇬 833 172 32ms 15 Apr 2025 337th sean-niemann 🇺🇸 833 172 29ms 25 Apr 2025 339th ovs-code 🇩🇪 833 316 575ms 2 Feb 2025 340th Natanaelel 🇸🇪 832 58 21ms 12 Sep 2021 340th AlephSquirrel 832 58 124ms 31 May 2023 340th msbranicky 832 58 23ms 28 Aug 2023 340th commandblockguy 🇺🇸 832 58 19ms 23 Nov 2023 344th namelessiw 832 143 445ms 15 Jun 2024 345th tpaxman 🇨🇦 832 145 19ms 17 Dec 2020 345th rowechenzhong 832 145 25ms 26 Nov 2021 345th btjones0 832 145 20ms 16 Jul 2022 345th lifthrasiir 🇰🇷 832 145 795ms 12 Nov 2024 349th stefangimmillaro 831 182 122ms 10 Nov 2024 350th andersk 🇺🇸 830 198 169ms 16 Mar 2020 351st BrunoVisnadi 🇧🇷 827 146 19ms 26 Sep 2025 351st Lv0Sys 🇵🇱 827 146 27ms 17 mins ago 353rd edsrzf 🇳🇿 827 155 10ms 4 Jul 2025 354th DialFrost 🇸🇬 825 99 54ms 15 Apr 2025 355th GolfingSuccess 🇬🇷 825 126 567ms 25 Jan 2025 356th rhdqor213 824 124 10ms 11 Dec 2024 357th edsrzf 🇳🇿 824 189 283ms 21 Jul 2025 358th DialFrost 🇸🇬 823 110 1,080ms 15 Apr 2025 359th Yewzir 🇧🇪 823 267 1,876ms 25 May 2024 360th Shanethegamer 🇺🇸 822 95 67ms 30 Jun 2022 360th dokutan 822 95 67ms 8 Sep 2025 362nd davecame 821 147 23ms 27 Mar 2024 362nd Artemis21 🇬🇧 821 147 41ms 30 Dec 2024 364th Steffan153 🇫🇮 821 156 27ms 30 May 2024 365th acotis 821 200 215ms 20 Apr 2025 365th ovs-code 🇩🇪 821 200 156ms 24 Apr 2025 367th kg583 🇺🇸 819 127 576ms 23 Feb 2024 368th Ripick 818 59 23ms 17 Mar 2024 369th lynn 817 201 179ms 9 Jan 2025 370th Shanethegamer 🇺🇸 816 49 99ms 7 Dec 2024 370th fuzzylojik-golf 🇺🇸 816 49 97ms 9 Sep 2025 372nd luftj 815 148 32ms 23 Apr 2020 372nd Stockoh 🇫🇷 815 148 35ms 5 May 2023 372nd janbehrens 🇩🇪 815 148 22ms 17 Jun 2023 372nd edsrzf 🇳🇿 815 148 21ms 22 Jul 2025 372nd bzijlema 🇳🇱 815 148 45ms 25 Oct 2025 377th user189032 815 179 327ms 29 May 2019 378th MeWhenI 🇻🇦 814 176 16ms 16 Apr 2025 379th primo-ppcg 🇹🇭 813 131 144ms 25 Dec 2020 380th sean-niemann 🇺🇸 813 178 597ms 24 Sep 2025 381st emplv 🇱🇻 812 113 19ms 7 Apr 2022 382nd betaveros 810 149 19ms 2 Jan 2023 382nd sultan 810 149 1,835ms 9 Mar 2024 382nd snoozingnewt 🇨🇦 810 149 32ms 8 days ago 385th primo-ppcg 🇹🇭 810 153 367ms 15 Jan 2021 385th JayXon 🇺🇸 810 153 388ms 23 Jul 2025 387th MeWhenI 🇻🇦 809 101 87ms 16 Apr 2025 388th Steffan153 🇫🇮 806 112 978ms 30 May 2024 389th DialFrost 🇸🇬 805 110 1,030ms 1 Sep 2025 390th ETHproductions 🇺🇸 805 114 14ms 23 May 2018 390th vlpx 🇫🇮 805 114 21ms 23 Sep 2024 392nd daedals 805 150 19ms 12 Jun 2019 392nd abailey2020 🇺🇸 805 150 21ms 13 Dec 2020 392nd RYNO8 805 150 25ms 25 Aug 2023 392nd CornerMercury 🇬🇧 805 150 21ms 27 days ago 396th Shanethegamer 🇺🇸 805 327 709ms 24 Jan 2025 397th aksyristos 804 60 26ms 8 Feb 2023 398th retrohun 804 93 53ms 26 Aug 2024 399th marshallward 🇺🇸 804 190 50ms 6 May 2025 400th JayXon 🇺🇸 800 120 155ms 12 Dec 2024 First Prev 321–400 of 1,866 Next Last