The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Fibonacci in JavaScript 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 798th MyXoToD 🇩🇪 423 78 9ms 7 May 2025 802nd marissa999 418 79 9ms 9 Jan 2018 802nd StronkCheese 🇺🇸 418 79 8ms 13 Mar 2023 804th Starwort 🇬🇧 413 80 8ms 15 Dec 2018 804th marea 413 80 8ms 18 Jun 2020 806th dcure73 407 81 9ms 7 Jun 2019 806th tickct 407 81 24ms 13 Sep 2019 806th shawphy 407 81 9ms 15 Oct 2021 806th PowershellKnut 🇳🇴 407 81 8ms 7 Jan 2024 810th jakethakur 402 82 9ms 30 Mar 2018 810th steedwards241 402 82 8ms 12 Nov 2020 810th brodie-m 402 82 8ms 24 Nov 2022 810th rushi0326 402 82 9ms 26 Dec 2023 814th pashabou 398 83 8ms 5 Apr 2018 814th WilleyOhana 398 83 24ms 26 Feb 2021 814th rossmacfarlane 398 83 8ms 9 Nov 2022 817th MarlonClark 393 84 9ms 30 Dec 2019 817th ThePyProgrammer 393 84 8ms 14 Dec 2021 817th ahorihan 393 84 9ms 3 Aug 2022 820th syedad218 384 86 9ms 12 Jul 2023 821st MatthewDietrich 379 87 26ms 6 Jun 2018 822nd dkdub 371 89 9ms 2 Jun 2018 822nd dbkirk4211 371 89 8ms 3 May 2024 824th aloehan 367 90 8ms 18 Dec 2017 824th Designer023 367 90 9ms 7 Feb 2020 824th feherd 367 90 8ms 15 Nov 2023 827th hacker19374 363 91 8ms 8 Mar 2023 827th JackieAlacrity2373 363 91 9ms 14 May 2024 829th nickforddev 359 92 8ms 28 Nov 2023 830th Alice-Cheshire 355 93 9ms 26 Feb 2018 831st pablaber 347 95 24ms 28 Sep 2017 832nd kevinnaviapaiva 337 98 8ms 17 Feb 2025 833rd polyrtm 330 100 9ms 17 Nov 2018 833rd jtaxen 330 100 8ms 18 Mar 2022 835th itsabdelrahman 324 102 8ms 22 May 2018 836th Noah-Fox 311 106 8ms 1 Jun 2022 837th mathu99 287 115 8ms 11 Oct 2017 838th ryanarobbins 284 116 24ms 4 Jun 2020 839th Raka-Raka 282 117 9ms 18 Jan 2020 840th zbaklund 277 119 9ms 12 Apr 2018 840th danielproctor31 277 119 8ms 28 Mar 2019 840th patrick96 277 119 8ms 4 Jan 2020 843rd jcwebhole 275 120 9ms 28 Jun 2018 844th shuabrannigan 260 127 9ms 3 Apr 2023 845th AlexGoldthorpe 250 132 8ms 23 Oct 2020 846th nephila-nacrea 🇬🇧 236 140 8ms 17 Aug 2020 847th KatieLG-Transpiler 🇬🇧 232 142 9ms 23 Jun 2022 848th alvincentinio 209 158 9ms 9 Jul 2019 849th NathanGabrielson 205 161 8ms 30 Mar 2022 850th mothcolada 🇺🇸 192 172 9ms 13 Apr 2021 850th mokymok 🇺🇸 192 172 9ms 9 Nov 2021 852nd kmegoryc 177 186 9ms 29 Oct 2019 853rd Yen-Peng 173 191 8ms 14 Jul 2020 854th PaulCouthouis 167 198 9ms 30 Nov 2022 855th BKGSr2 164 201 8ms 17 Mar 2023 856th bensrobe 136 243 8ms 25 Feb 2019 857th seanleken 123 269 27ms 7 Oct 2019 First Prev 801–857 of 857
