--- title: "BIP39 Word #2002: when — Seed Phrase Mnemonic Word" url: "https://bip39-phrase.com/bip39-word/when/" language: "en" updated: "2026-10-19T00:00:00+00:00" --- Word #2002 11111010001 # when — BIP39 word #2002 "**when**" is word #2002 of the 2048 words in the official BIP39 English wordlist, between [wheel](/bip39-word/wheel/) and [where](/bip39-word/where/). In a seed phrase it stands for the 11-bit value `11111010001`, decimal index 2001\. /wɛn/ · _adverb:_ at what time, or at the time that [Russian](/ru/ "The BIP39 wordlist with Russian translations"): когда ## Binary Representation Seven 1-bits and four 0-bits; 330 of the 2048 indexes have exactly seven 1-bits. One wrong bit turns it into (leftmost bit first): [kick](/bip39-word/kick/)[riot](/bip39-word/riot/)[surface](/bip39-word/surface/)[tuition](/bip39-word/tuition/)[vendor](/bip39-word/vendor/)[wreck](/bip39-word/wreck/)[wealth](/bip39-word/wealth/)[will](/bip39-word/will/)[wide](/bip39-word/wide/)[whip](/bip39-word/whip/)[wheel](/bip39-word/wheel/) Position Hex Index 0x7D1 4-Letter Prefix when ## About "when" in BIP39 - It takes all four letters to identify "when": **"whe"** also begins [wheat](/bip39-word/wheat/), [wheel](/bip39-word/wheel/) and [where](/bip39-word/where/). - "when" appears in one of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vector #8 (word 18 of 18). Every official vector passes the [checksum checker](/bip39-checksum-checker/), and [How BIP39 works](/how-bip39-works/) shows how the entropy turns into such words. As the last word of vector #8, its final 6 bits, **010001**, are the checksum of the 18-word phrase. Official test vector #8 [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) [zoo](/bip39-word/zoo/) when ## Word #2002 in the Other 9 BIP39 Wordlists [Czech](/czech/) zlehka [French](/french/) viande [Italian](/italian/) vile [Japanese](/japanese/) りんご [Korean](/korean/) 화살 [Portuguese](/portuguese/) viaduto [Spanish](/spanish/) viejo [Traditional Chinese](/chinese-traditional/) 裕 [Simplified Chinese](/chinese-simplified/) 裕 ## Similar Words — Check Carefully During Recovery 2 BIP39 words differ from "when" by just a single letter — the most common source of typos when a seed phrase is entered by hand: [hen](/bip39-word/hen/)[then](/bip39-word/then/) Read aloud, "when" /wɛn/ is one sound away from these 7 words: [one /wʌn/](/bip39-word/one/)[pen /pɛn/](/bip39-word/pen/)[ten /tɛn/](/bip39-word/ten/)[web /wɛb/](/bip39-word/web/)[wet /wɛt/](/bip39-word/wet/)[win /wɪn/](/bip39-word/win/)[wine /waɪn/](/bip39-word/wine/) Words sharing the first three letters "whe": [wheat](/bip39-word/wheat/)[wheel](/bip39-word/wheel/)[where](/bip39-word/where/) ## More BIP39 Words Starting with "W" [ #1998 whale ](/bip39-word/whale/)[ #1999 what ](/bip39-word/what/)[ #2000 wheat ](/bip39-word/wheat/)[ #2001 wheel ](/bip39-word/wheel/)[ #2003 where ](/bip39-word/where/)[ #2004 whip ](/bip39-word/whip/)[ #2005 whisper ](/bip39-word/whisper/)[ #2006 wide ](/bip39-word/wide/) [View all words starting with "W" ](/bip39-words/w/) ## Seed phrase, key and recovery guides - [Seed Phrase Formats by Network: BIP39 and the Exceptions](/seed-phrase-formats-by-network/) - [BIP39 vs BIP32 vs BIP44: How the Seed Standards Fit Together](/crypto-seed-standards-bip39-vs-bip32-vs-bip44/) - [How to Memorize a Seed Phrase: Color, Story and Palace Methods](/seed-phrase-memory/) [ Full BIP39 Wordlist ](/)