Passage: On 25 June 1967, the Beatles performed their forthcoming single, "All You Need Is Love", to an estimated 350 million viewers on Our World, the first live global television link. Released a week later, during the Summer of Love, the song was adopted as a flower power anthem. Two months later, the group suffered a loss that threw their career into turmoil. Having been introduced to Maharishi Mahesh Yogi only the previous night in London, on 25 August they travelled to Bangor for his Transcendental Meditation retreat. Two days later, their manager's assistant, Peter Brown, phoned to inform them that Epstein, only thirty-two years old, had died. The coroner ruled the death an accidental carbitol overdose, although it was widely rumoured to be a suicide. Epstein had been in a fragile emotional state, stressed by personal troubles. His death left the group disoriented and fearful about the future. Lennon recalled: "We collapsed. I knew that we were in trouble then. I didn't really have any misconceptions about our ability to do anything other than play music, and I was scared. I thought, 'We've had it now.'"

Question: When did they travel to Bangor?
25 August