Bitcoin calendar.
Halvings and network upgrades, the US releases that move markets, conferences, and the anniversaries of Bitcoin's history. Dates are in UTC.
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BTC Balkans
ConferencesSunday 1 November
A two-day, community-run Bitcoin conference for the Balkans, with keynotes, panels and workshops.
August 2027
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|
| 1UASF, 2017 | ||||||
| 2Bitfinex hack, 2016 | 3 | 4 | 5 | 6Jobs report | 7 | 8 |
| 9 | 10 | 11CPI inflationMicroStrategy buys, 2020 | 12 | 13 | 14 | 15Overflow bug, 2010 |
| 16 | 17 | 18Fed minutes | 19 | 20 | 21 | 22 |
| 23 | 24SegWit, 2017 | 25PCE inflation | 26Bitcoin Asia | 27Bitcoin AsiaOptions expiry | 28 | 29 |
| 30 | 31 |
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Events in August 2027
Sunday 1 AugustIn 273 days
The user-activated soft fork (BIP 148) takes effect, 2017
10 years ago. BIP 148, the "user-activated soft fork" (UASF), took effect at block 478,484: nodes running it would reject any block that did not signal support for SegWit. Miners were already signalling after a compromise proposal, BIP 91, so no split followed from it.
NetworkSee block 478,484SourceBIP 148, Mandatory activation of segwit deployment (from midnight 1 August 2017 UTC)
Monday 2 AugustIn 274 days
Bitfinex is hacked, 2016
11 years ago. Hackers stole 119,756 bitcoin, then worth about $72 million, from customer accounts at Bitfinex, a Hong Kong-based exchange, which halted trading. Bitfinex then spread the loss across all its customers, cutting every balance by about 36% and giving them tokens as credit for what they had lost.
MarketsSourceReuters, Bitcoin worth $72 million stolen from Bitfinex exchange in Hong Kong, 3 Aug 2016 (Wayback Machine copy)
Friday 6 AugustIn 278 days
US jobs report
The US Bureau of Labor Statistics publishes the jobs report (the Employment Situation) for July 2027, with the number of jobs added and the unemployment rate.
Markets · 12:30 UTCSourceBLS schedule of Employment Situation releases
Wednesday 11 AugustIn 283 days
US inflation report (CPI)
The US Bureau of Labor Statistics publishes the consumer price index (CPI) for July 2027, which measures US inflation.
Markets · 12:30 UTCSourceBLS schedule of CPI releases
MicroStrategy buys bitcoin for its treasury, 2020
7 years ago. MicroStrategy, a Nasdaq-listed software company, said it had bought 21,454 bitcoins for about $250 million and made bitcoin its primary treasury reserve asset, the main asset in which it holds its spare cash.
MarketsSourceMicroStrategy press release, MicroStrategy Adopts Bitcoin as Primary Treasury Reserve Asset (SEC Form 8-K, Exhibit 99.1)
Sunday 15 AugustIn 287 days
The value overflow incident, 2010
17 years ago. A transaction in block 74,638 created about 184 billion bitcoin by exploiting a bug in how the software added up large amounts. Satoshi Nakamoto released a fix, Bitcoin 0.3.10, the same day, and the network replaced the bad block.
NetworkSee block 74,638SourceBitcoin Wiki, Value overflow incident
Wednesday 18 AugustIn 290 days
Fed meeting minutes
The Federal Reserve publishes the minutes of its 27–28 July meeting, which show how its policymakers discussed the interest-rate decision. The date follows the Fed's rule of three weeks after the decision; it lists the exact day nearer the time.
Markets · 18:00 UTCSourceFederal Reserve FOMC calendar ("The minutes of regularly scheduled meetings are released three weeks after the date of the policy decision")
Tuesday 24 AugustIn 296 days
SegWit activates, 2017
10 years ago. Segregated Witness (SegWit) took effect at block 481,824. It moves signatures into a separate part of the block, which fixes transaction malleability (the ability to change a transaction's ID before it confirms) and raises block capacity.
NetworkSee block 481,824SourceBitcoin Core source, SegwitHeight = 481824 with the block hash
Wednesday 25 AugustIn 297 days
US inflation report (PCE)
The US Bureau of Economic Analysis publishes personal income and spending for July 2027, including the PCE price index, the inflation measure behind the Federal Reserve's 2% goal.
Markets · 12:30 UTCSourceBEA release schedule ("Personal Income and Outlays"), 2027
Thursday 26 AugustIn 298 days
Bitcoin Asia
BTC Inc's Asian Bitcoin conference. The organiser's site also shows 27–28 August in one place.
Conferences · Until 27 Aug · Hong Kong Convention and Exhibition Centre, Hong KongSourceBitcoin Asia (organiser)Venue and dates
Friday 27 AugustIn 299 days
Monthly bitcoin options expiry
Deribit's monthly bitcoin options and futures expire, settled at the average of its bitcoin price index from 07:30 to 08:00 UTC.
Markets · 08:00 UTCSourceDeribit, Contract Introduction Policy ("Monthly options expire on the last Friday of each calendar month at 08:00 UTC")