What is the time zone Yahoo Finance uses for crypto close prices?

External question — Personal Finance Stack Exchange Author: dorien Original post: https://money.stackexchange.com/questions/133938 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I am using the yfinance (Yahoo Finance API) library to retrieve crypto prices (e.g. ETH-USD). I am trying to figure out when the next line (i.e. current day or previous day) will be available. In other words: the close time of the previous day is which time in which timezone? When I examine the ticker graph I can't seem to figure it out. For instance: today ETH-USD's last 'close' price is listed at 651.814. For some reason my current time on the graph is in UK time zone (although I am in Singapore). I cannot find the 651.814 time on the graph. As which time/tz is the close price taken? It's not 12am UK time: Also not 5am UK time = midnight NY time: From Yahoo help I can only find information about stock exchanges. I only found this question related to stock markets, but obviously for crypto it's different as trading is continuous. Update, some more info A few hours before 9pm Eastern time, the day goes blank and the next day already shows up. This is 20 Dec 9PM EST: Then after 9pm EST, the row fills in and tomorrows disappears: The close time is given as 638.29, which is the price roughly around 7pm EST: So far, it seems like the data is 2 hours delayed with day ending at 9pm EST. In this case. If there is such a huge delay I may need to find a different API. Also strange that there is a big difference between close and next day open prices. Especially if the market is continuous?

External answer — Personal Finance Stack Exchange Author: dorien Original post: https://money.stackexchange.com/a/134014 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. The update in the question reveals more info, hinting towards a close time of 7:00pm EST, which is 00:00 UTC. Finally, I found a page that refers to UTC for Volume referencing. Still that leaves a 2 hour gap until the data appears... which is quite a huge delay.

External answer — Personal Finance Stack Exchange Author: user108036 Original post: https://money.stackexchange.com/a/139201 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I believe it is based on GMT (Greenwich mean time).

External answer — Personal Finance Stack Exchange Author: Brian C. Original post: https://money.stackexchange.com/a/140890 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. It is the British Summer Time (BST). That is what it shows under the cost of the coin on the Yahoo Finance page for any of the Cryptocurrencies.