In the recent market conditions, the average spread for EUR/USD is highest around New York close. This is similar to pre-COVID market conditions.
For EUR/USD, we observe a flattening of the recent spread curve at around 16:00 GMT i.e. London fixing hour, with spread being more equally distributed across London trading hours during this recent period.
In the recent period, the spread has generally tightened, relative to the COVID peak period.