The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Fibonacci in PHP 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 155th eiburns 548 62 4ms 11 Sep 2023 155th JesseNoEyes 🇺🇸 548 62 4ms 25 Sep 2024 163rd Onitech 540 63 4ms 14 Nov 2018 163rd mrdamien 540 63 4ms 25 Mar 2019 163rd marsdeat 540 63 4ms 16 Jul 2020 163rd nortonbatista 540 63 4ms 31 Oct 2023 167th thejazex1 531 64 4ms 2 Oct 2019 167th fuerst-ede 531 64 4ms 8 Jul 2022 167th hossain-iqbal 531 64 4ms 11 Jul 2023 167th piripasa 531 64 4ms 12 Jul 2023 167th azure-blondon 531 64 5ms 10 Jul 2024 167th andre-lameirinhas 🇵🇹 531 64 4ms 22 Jul 2024 173rd MCausc78 🇺🇦 523 65 4ms 7 Jan 2023 173rd jbirchevans 523 65 4ms 3 Aug 2023 173rd asminog 523 65 5ms 4 Oct 2024 173rd heanyang1 523 65 4ms 22 Apr 2025 177th stadamdoki 515 66 5ms 12 Apr 2021 177th janga1 515 66 4ms 19 Aug 2021 179th matthudgins 507 67 4ms 3 Apr 2019 179th jessegyger 507 67 4ms 22 Oct 2022 179th Zach1031 507 67 4ms 15 Nov 2025 182nd hacker112 🇸🇪 500 68 4ms 12 Jun 2024 183rd arkcodes 493 69 4ms 27 Feb 2018 183rd ConnorHowell 493 69 4ms 22 Mar 2018 183rd martinnorling 🇸🇪 493 69 4ms 17 May 2022 186th phpboyscout 486 70 4ms 3 Sep 2019 186th Tonic-Box 486 70 4ms 6 Nov 2020 188th colios13 479 71 4ms 12 Aug 2020 189th miika 472 72 4ms 22 Nov 2019 190th YPuest 466 73 4ms 23 Jul 2024 191st ANovelForStudy 459 74 4ms 9 Jun 2023 191st MiranDaniel 🇨🇿 459 74 4ms 30 Aug 2023 193rd sm1lko 453 75 4ms 14 Dec 2022 193rd snobbywaterfowl 453 75 4ms 10 Jul 2025 195th FrederikHutfless 🇩🇪 442 77 4ms 22 Dec 2022 195th ApoChagi 442 77 4ms 25 Oct 2025 197th dwilmer 436 78 4ms 26 Feb 2018 198th FlorianGubler 425 80 4ms 23 Dec 2020 198th emgordon154 425 80 4ms 25 Jul 2024 200th FerryHupse 420 81 4ms 31 Jan 2020 201st VVstatus 415 82 4ms 13 Aug 2020 202nd nico-bachner 410 83 4ms 28 Dec 2020 202nd dillon-duncando 410 83 128ms 21 Dec 2021 202nd bryanmytko 410 83 116ms 5 Jul 2022 205th mikerees 405 84 5ms 8 Nov 2017 206th janhabbo 395 86 4ms 2 Jul 2018 206th iTearo 🇷🇺 395 86 4ms 28 Sep 2020 208th johnennewdeeson 391 87 4ms 13 Oct 2017 209th abishek28007 386 88 4ms 7 Sep 2020 209th DaCuteRaccoon 386 88 120ms 3 Apr 2022 211th jodylecompte 382 89 5ms 30 Dec 2020 212th diwms 374 91 158ms 5 Apr 2019 212th pedromcsousa 🇵🇹 374 91 102ms 23 Nov 2020 214th blagovidov 370 92 5ms 14 Oct 2021 215th Naas13 366 93 93ms 15 Apr 2020 216th AdrianPop27 358 95 137ms 8 Apr 2019 217th PowershellKnut 🇳🇴 347 98 4ms 7 Jan 2024 218th it4e 343 99 150ms 25 Oct 2018 219th Threadzless 333 102 4ms 29 Oct 2018 220th kevinnaviapaiva 315 108 4ms 17 Feb 2025 221st jtaxen 288 118 4ms 18 Mar 2022 222nd ansnaldo 264 129 4ms 22 Oct 2018 223rd Cr3aHal0 252 135 73ms 5 Jul 2019 224th MRGAO-CR7 250 136 4ms 15 Oct 2018 225th retrohun 248 137 4ms 21 Dec 2018 226th adamiscoding 245 139 162ms 8 Nov 2017 226th HumanoidCPU 245 139 4ms 18 May 2024 226th Mabeloid 🇳🇴 245 139 4ms 18 Sep 2024 226th Herbert00709 🇵🇱 245 139 4ms 31 Oct 2024 226th CaedenHarper 🇨🇦 245 139 4ms 16 Aug 2025 231st Canmaya 239 142 4ms 23 Dec 2020 232nd Redbowpatch101 238 143 4ms 12 Aug 2020 233rd mokymok 🇺🇸 201 169 4ms 9 Nov 2021 233rd KatieLG-Transpiler 🇬🇧 201 169 4ms 24 Jun 2022 235th jayanwar 153 222 4ms 31 Oct 2019 236th ahmedsliman 134 254 102ms 12 Jul 2023 237th mikemeier 117 290 4ms 8 Nov 2017 238th seanleken 97 351 128ms 31 Oct 2019 First Prev 161–238 of 238
