c52
In the context of charter/current loco ops I guess there might be some truth in that..
OTOH (Pre-Covid) it used to be relatively easy to get e.g. an early Air France or Iberia flight from Heathrow that could have you sitting in the Sun by the Med mid AM and the same European operators would have services arriving LHR late evening, with the crew/aircraft then night stopping UK and to operate back to base next AM….