Iftar Timing

I have an issue with regards to iftar. I'm based in the UK and it states in the timetable that iftar starts at 20:19.

We know the time to break out fast is at the time of Maghrib. But, my issue is that it's still relatively light outside for it to be time for Maghrib at 20:19. This has led me to doubt whether I should break my fast at 20:19.

Shaykh Ibn ‘Uthaymeen (may Allaah have mercy on him) said: 

It is Sunnah to hasten to break the fast when the sun has set. What counts is the setting of the sun, not the adhaan, especially in present times when the people rely on timetables and they follow the timetables based on the clocks, and their clocks may be fast or slow. If the sun sets and you see it, and the people have not yet given the adhaan, then you may break the fast. If they give the adhaan and you see that the sun has not set, then you should not break the fast, because the Messenger (peace and blessings of Allaah be upon him) said: “When the night comes from here and the day departs from here, and the sun has set, then it is time for the fasting person to break his fast.” 

I'm confused.