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I sort of feel like im becoming a thorn in your side, and for that I apologize. As far as I understand the contest, the "high price" is taken from the historical data on Coinmarketcap.com at 7:00 PM on the day of the contest, In this case, August 29. If I am interpreting that wrong and the time is 11:00 PM, the value stated of (599.30) would still be incorrect.

Per CMC historical data on 8-29-17:
7:PM (564.46)
11:PM (552.71)
The last time and date BCH traded at or around the (599.30) value was 8:00 PM, 8-28-17...

As far as this particular contest goes, I realize that I forgot to upvote the post and would therefore be ineligible to win regardless. With that mistake, I humbly concede to whomever is next in line.
I think these contests are a great idea, I like making the pics, and believe they will eventually have far greater participation, making the need for accuracy very important.

The time is 11pm (2300) UTC. Which would be 7pm (1900) EST.

We have given you a link below to show you were the data is drawn from. Just go down to the Date of the Contest that you are looking for and this will give you the High for that trading period.

LINK:

https://coinmarketcap.com/currencies/bitcoin-cash/historical-data/

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