The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Intersection in all languages in chars. 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 Chars Time Submitted 641st GrayJoKing 🇦🇺 654 171 109ms 24 Nov 2021 642nd MeWhenI 🇻🇦 653 107 615ms 24 May 2024 643rd Shanethegamer 🇺🇸 653 140 5ms 14 Mar 2025 644th VictorChemin 🇫🇷 652 205 2ms 26 Nov 2021 644th pyrolitic 🇮🇪 652 205 2ms 26 Apr 2022 644th CatsAreFluffy 652 205 2ms 25 Jan 2023 647th saito-ta 🇯🇵 650 69 4ms 4 Jul 2022 648th KrausRaus 🇺🇸 650 136 10ms 9 Dec 2020 648th akshatj27 🇦🇶 650 136 9ms 30 Dec 2021 648th chasewalden 650 136 9ms 25 Apr 2023 651st janbehrens 🇩🇪 649 108 402ms 19 Jul 2022 652nd DialFrost 🇸🇬 649 120 112ms 4 Aug 2024 653rd TRexOnGit 649 224 389ms 29 Nov 2024 654th clockworknazo 647 117 4ms 30 Jun 2023 655th MeWhenI 🇻🇦 647 194 6ms 11 Oct 2023 656th lowlighter 645 137 9ms 1 Nov 2020 656th boxjelly 645 137 9ms 7 Feb 2021 656th randolchance 645 137 9ms 29 Dec 2022 659th xsot 🇸🇬 644 119 46ms 21 days ago 659th jared-hughes 644 119 22ms 21 days ago 661st AlephSquirrel 644 194 8ms 21 Oct 2024 662nd MeWhenI 🇻🇦 644 213 41ms 7 Jun 2023 663rd inventshah 643 109 358ms 14 Nov 2022 664th jared-hughes 643 288 13ms 6 Jul 2024 665th boxjelly 642 208 2ms 17 Feb 2021 666th MattShaile 641 138 8ms 19 Apr 2022 666th ShiraJoseph 🇺🇸 641 138 9ms 6 May 2023 666th two-bad 🇬🇧 641 138 9ms 24 Feb 2024 666th xShadowBlade 641 138 10ms 26 Dec 2024 670th Adelzu 640 227 373ms 21 Nov 2021 670th joelgduggan 640 227 351ms 21 Nov 2021 672nd bwat2 640 275 407ms 21 Apr 2022 672nd crizin 🇰🇷 640 275 411ms 15 Sep 2023 674th alexkunin 636 139 12ms 13 Oct 2020 675th jgbaldwinbrown 636 210 2ms 29 Jun 2021 676th inventshah 635 110 396ms 16 Jan 2024 676th CaedenHarper 🇨🇦 635 110 487ms 29 Jul 2025 678th DialFrost 🇸🇬 634 135 763ms 1 Sep 2025 679th KrausRaus 🇺🇸 634 177 5ms 20 Jan 2022 680th DialFrost 🇸🇬 634 198 4ms 27 May 2025 681st castur1 634 229 349ms 31 Jan 2022 682nd cipharius 633 177 2ms 20 Jan 2021 683rd rucin93 🇵🇱 632 112 164ms 31 Oct 2024 684th zakariamouhid 631 140 9ms 1 Mar 2023 685th snoozingnewt 🇨🇦 631 266 227ms 2 Oct 2025 686th bac0id 631 279 490ms 27 Jun 2024 687th warmCabin 630 212 2ms 15 Apr 2022 688th SirBogman 🇺🇸 629 111 477ms 16 Jan 2024 689th Schmitt-Very-Cool 629 280 433ms 30 Sep 2025 690th Alex-x90 🇺🇸 628 122 23ms 19 Jul 2023 690th inventshah 628 122 40ms 4 Aug 2023 692nd Shanethegamer 🇺🇸 628 200 42ms 10 Sep 2024 693rd dsntzn 🇸🇰 627 141 9ms 13 Oct 2020 693rd lynn 627 141 9ms 30 Aug 2021 693rd FlorianCassayre 🇫🇷 627 141 9ms 14 Jun 2024 693rd Protothor 627 141 9ms 23 Jun 2025 693rd acollett89 627 141 9ms 25 Jul 2025 693rd JOrE20 🇺🇸 627 141 9ms 20 days ago 699th snoozingnewt 🇨🇦 627 216 476ms 2 Oct 2025 700th Chinay-Domitrix 🇺🇸 626 163 4,808ms 25 Mar 2025 701st RandGuy 624 233 348ms 1 Apr 2022 702nd stefangimmillaro 623 123 17ms 11 Sep 2021 702nd 5cw 🇺🇸 623 123 26ms 28 May 2024 702nd Bulmenisaurus 623 123 16ms 8 Oct 2025 705th Maznek 622 142 9ms 31 Jan 2024 705th junkondo-jp 622 142 9ms 5 May 2024 705th Andrey-Plotnikov 622 142 9ms 17 May 2024 705th Dataen 622 142 10ms 9 Jun 2024 709th MeWhenI 🇻🇦 621 356 1,672ms 7 Nov 2025 710th snoozingnewt 🇨🇦 620 284 529ms 2 Oct 2025 711th inventshah 619 95 2ms 15 Nov 2022 711th Salutations45 619 95 2ms 19 Jan 2025 713th albanian-laundromat 619 245 44ms 15 days ago 714th AlephSquirrel 618 124 41ms 3 Aug 2023 714th bricknellj 618 124 41ms 9 Oct 2025 716th UBKorkut 618 143 9ms 12 Mar 2021 716th olleicua 🇺🇸 618 143 9ms 3 Feb 2024 718th KatieLG 🇬🇧 618 215 636ms 19 May 2021 719th hklemp 🇩🇪 618 235 336ms 21 Nov 2021 720th KatieLG 🇬🇧 615 273 195ms 20 May 2021 First Prev 641–720 of 1,295 Next Last