The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Fibonacci 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 640th prplz 🇦🇺 961 69 82ms 1 Jan 2022 640th JayXon 🇺🇸 961 69 82ms 2 Jan 2022 640th sean-niemann 🇺🇸 961 69 65ms 2 Jan 2022 640th sisyphus-ppcg 🇦🇺 961 69 69ms 2 Jan 2022 640th nwellnhof 🇩🇪 961 69 78ms 2 Jan 2022 640th m-tkach 🇺🇦 961 69 81ms 2 Jan 2022 640th Irratix 🇳🇱 961 69 66ms 3 Jan 2022 640th SirBogman 🇺🇸 961 69 78ms 3 Jan 2022 640th GrayJoKing 🇦🇺 961 69 74ms 4 Jan 2022 640th btnlq 961 69 81ms 4 Jan 2022 640th primo-ppcg 🇹🇭 961 69 67ms 18 Jan 2022 640th inventshah 961 69 64ms 19 Jan 2022 640th MeWhenI 🇻🇦 961 69 68ms 8 May 2022 640th shellbertt 🇨🇦 961 69 68ms 9 May 2022 640th jared-hughes 961 69 53ms 20 Jul 2022 640th Shanethegamer 🇺🇸 961 69 63ms 27 Aug 2022 640th Steffan153 🇫🇮 961 69 64ms 1 Oct 2022 640th Alex-x90 🇺🇸 961 69 74ms 17 Oct 2022 640th qwertyuiop3 🇷🇺 961 69 77ms 20 Oct 2022 640th Seek64 🇩🇪 961 69 67ms 11 Nov 2022 640th janbehrens 🇩🇪 961 69 62ms 20 Nov 2022 640th astdefu 961 69 67ms 8 Dec 2022 640th DialFrost 🇸🇬 961 69 59ms 12 Dec 2022 640th syntax-rules 961 69 57ms 25 Dec 2022 640th ayushdewan 961 69 68ms 2 Jan 2023 640th Betuaredead 961 69 68ms 4 Jan 2023 640th Yewzir 🇧🇪 961 69 75ms 3 Feb 2023 640th CatsAreFluffy 961 69 60ms 18 Feb 2023 640th snyderek 🇺🇸 961 69 61ms 11 Mar 2023 640th xsot 🇸🇬 961 69 79ms 21 May 2023 640th ovs-code 🇩🇪 961 69 71ms 3 Oct 2023 640th fuzzylojik-golf 🇺🇸 961 69 72ms 21 Oct 2023 640th FlyingPenguin223 961 69 54ms 1 Nov 2023 640th GolfingSuccess 🇬🇷 961 69 63ms 3 Nov 2023 640th Herbert00709 🇵🇱 961 69 81ms 10 Nov 2023 640th roupiq 🇵🇱 961 69 77ms 10 Nov 2023 640th drabart 🇵🇱 961 69 69ms 11 Dec 2023 640th kkoenig 961 69 72ms 22 Dec 2023 640th byronknoll 🇺🇸 961 69 62ms 6 Feb 2024 640th Mandrzejy 🇵🇱 961 69 62ms 4 Mar 2024 640th error256 961 69 73ms 27 May 2024 640th jipsong 🇩🇪 961 69 71ms 27 Jun 2024 640th Jacob385 961 69 57ms 31 Jul 2024 640th pardouin 🇫🇷 961 69 79ms 19 Oct 2024 640th dodecahedron6291 961 69 79ms 3 Nov 2024 640th 09cf 961 69 82ms 16 Dec 2024 640th yeminghan2021 961 69 57ms 1 Feb 2025 640th KasperKivimaeki 🇫🇮 961 69 58ms 24 Mar 2025 640th b-illy 🇬🇧 961 69 77ms 31 May 2025 640th joaosigma 🇵🇹 961 69 82ms 12 Jul 2025 640th rucin93 🇵🇱 961 69 70ms 23 Jul 2025 640th gusrod-coder 961 69 64ms 19 Sep 2025 640th Yax42 🇫🇷 961 69 68ms 4 Oct 2025 640th AdrienHache 🇫🇷 961 69 80ms 6 Oct 2025 640th snoozingnewt 🇨🇦 961 69 87ms 24 Oct 2025 640th luuumine 🇫🇷 961 69 64ms 30 Oct 2025 640th Languag3 961 69 80ms 10 hours ago 698th kmaork 🇮🇱 960 37 10ms 18 Apr 2018 698th edre 960 37 9ms 2 May 2018 698th tjtnorton 960 37 10ms 8 Nov 2018 698th PawaritL 960 37 9ms 28 Jan 2019 698th PFischbeck 960 37 9ms 2 Aug 2019 698th hoodadam 960 37 10ms 25 Oct 2019 698th CyberTapir 960 37 9ms 29 Jul 2020 698th McAidan99 960 37 9ms 29 Jul 2020 698th obamaman360 960 37 9ms 29 Jul 2020 698th PhonicCanine 960 37 9ms 1 Aug 2020 698th BBoehm 🇩🇪 960 37 10ms 8 Dec 2020 698th neihousaigaai 960 37 9ms 8 May 2021 698th jacklynnepenick 960 37 10ms 13 Aug 2021 698th jrm5399 🇰🇿 960 37 10ms 31 Jan 2022 698th mathisfun271 960 37 9ms 5 Mar 2022 698th Nicronmil 960 37 9ms 22 Nov 2022 698th CatsAreFluffy 960 37 9ms 18 Feb 2023 698th cesarm4 960 37 9ms 30 Apr 2023 698th AlexanderFair 960 37 10ms 29 Jun 2023 698th nyoshe 960 37 10ms 10 Oct 2023 698th Grrisly 960 37 9ms 9 Nov 2023 698th 5cw 🇺🇸 960 37 9ms 13 Jul 2024 698th Zounon 960 37 12ms 18 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