Hi Patrina,
Great of you to start this thread!
The Asian session UK time is from 9 pm till 6 am
The Frankfurt Session UK time is from 6 am till 4pm
The London Session starts from 7 am till 5 pm
The NY Session UK time starts from 1pm till 10 pm
I always pay attention to the Frankfurt session because it somewhat determines how the London session is going to flow.
If the Frankfurt session ends in a bullish candle on a 1 hour timeframe, chances are that the London session will either take a bullish trend or fade to a bearish trend.