I thought this one ledger ICO countdown may be useful. Its 16:45 BST but obviously with it being a countdown it will work for everyone.
https://www.timeanddate.com/countdown/generic?p0=136&iso=20180615T1645&year=2018&month=6&day=15&hour=16&min=45&sec=0&msg=One%20Ledger%20Countdown%20For%20BST
