previous hardfork statistics

Fork number   Block number   Date   Name
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0.   1           2015-07-30   Frontier
1.   200000   2015-09-07   Frontier Thawing
2.   1150000   2016-03-14   Homestead
3.   1920000   2016-07-20   DAO Fork
4.   2463000   2016-10-18   Tangerine Whistle
5.   2675000   2016-11-22   Spurious Dragon
6.   4370000   2017-10-16   Byzantium
7.   7280000   2019-02-28   Constantinople
8.   TBD   TBD   Istanbul             soon
9.   TBD   TBD   Berlin               (Devcon location)
10.   TBD   TBD   London
11.   TBC   TBC   Devcon names thereafter

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news update Istanbul
October 2019 Planned Ethereum Network Upgrade.
https://eth.wiki/en/roadmap/istanbul

Considering the previous hard fork that failed I thought the next hard fork might not have had a major impact on the rise in ETH prices, I still remember when the team doing a hard fork on the network had absolutely no impact on the increase in ETH prices, on the contrary that it had a negative impact on the decline in ETH prices at that time . But this is only my prediction, we will witness the truth later. hopefully can affect the increase in ETH prices again.