The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Calendar 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 81st pardouin 🇫🇷 0 141 35ms 2 days ago 82nd HumanoidCPU 0 142 486ms 4 days ago 82nd ovs-code 🇩🇪 0 142 38ms 4 days ago 84th Lv0Sys 🇵🇱 0 145 20ms 4 days ago 85th ovs-code 🇩🇪 0 148 14ms 2 Nov 2025 86th HumanoidCPU 0 150 17ms 4 days ago 87th Natanaelel 🇸🇪 0 157 51ms 2 days ago 88th pardouin 🇫🇷 0 163 1,352ms 47 hours ago 89th IISResetMe 0 164 467ms 46 hours ago 90th sean-niemann 🇺🇸 0 170 40ms 5 days ago 91st emplv 🇱🇻 0 172 12ms 2 days ago 92nd lyphyser 0 173 54ms 10 Feb 2025 93rd voytxt 🇨🇿 0 176 11ms 45 hours ago 94th rucin93 🇵🇱 0 182 9ms 34 hours ago 95th targrik 0 184 9ms 11 hours ago 96th attila8192 0 189 9ms 4 Mar 2025 97th AdrienHache 🇫🇷 0 190 397ms 26 days ago 98th MeWhenI 🇻🇦 0 194 39ms 15 Apr 2025 99th kg583 🇺🇸 0 201 43ms 6 May 2025 100th yibotongxue 0 204 15ms 20 Sep 2025 100th Yax42 🇫🇷 0 204 439ms 5 days ago 102nd sean-niemann 🇺🇸 0 205 12ms 4 days ago 103rd Andrey-Plotnikov 0 213 9ms 12 Jan 2025 104th snoozingnewt 🇨🇦 0 217 49ms 12 Oct 2025 105th namelessiw 0 225 382ms 28 Oct 2025 106th targrik 0 226 9ms 9 Apr 2025 107th tomh1012 0 229 436ms 34 hours ago 108th madex 🇩🇪 0 230 4ms 22 hours ago 109th kg583 🇺🇸 0 231 47ms 3 Sep 2025 110th KasperKivimaeki 🇫🇮 0 236 3ms 4 hours ago 111th pardouin 🇫🇷 0 241 3,066ms 32 hours ago 112th JOrE20 🇺🇸 0 242 12ms 3 days ago 113th snyderek 🇺🇸 0 244 440ms 43 hours ago 114th CLOStrophobic 🇮🇹 0 250 18ms 7 May 2025 115th kg583 🇺🇸 0 251 8ms 2 days ago 116th AlephSquirrel 0 253 36ms 4 days ago 117th smclaughlin-cf 0 270 9ms 13 days ago 118th ovs-code 🇩🇪 0 280 179ms 4 days ago 119th aadenboy 🇺🇸 0 293 4ms 4 days ago 120th kmathis22 0 294 486ms 4 days ago 121st nyson 0 307 401ms 17 Jun 2025 122nd qrakhen 0 318 537ms 31 hours ago 123rd jerrandolph 0 362 261ms 30 Sep 2025 124th albanian-laundromat 0 386 7ms 43 hours ago 125th Jacob385 0 450 438ms 29 Jan 2025 126th nate8nate 0 483 10ms 11 May 2025 127th johannes-looney-lizard 0 724 391ms 25 Apr 2025 128th snoozingnewt 🇨🇦 0 868 4ms 4 Oct 2025 First Prev 81–128 of 128