jm âøt*l!þ ÀJÐEkM&º¿ÙßÏPKYyyLMay 15. You can read some of the details here https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/2019-05-15-upgrade.md
https://whatsonchain.com/tx/1abf53c4c16d9bc8e9ae710def0a52ea88167bb58901dc4c5d3f4344249c0d7e