When do top European leagues start?

Sporting Lisbon kick off the Portuguese league on Friday night. The champions host Rio Ave to introduce the domestic competition to the public. The Portuguese clubs will once again be aiming to unseat Ligue 1 as Europe's fifth biggest competition.
With the departure of Kylian Mbappe to Real Madrid and the problems of finding an attractive recipient for their television rights, the French are expected to go into a tailspin.
The first step of the Portuguese territory is the perfect suggestion to review the opening matchdays of each of these continental calendars and what their dates are.
Opening fixture: Athletic v Getafe (19.00 CEST) Real Betis v Girona (21.30 CEST)
Celta de Vigo v Deportivo Alaves (19.00 CEST) Las Palmas v Sevilla FC (21.30 CEST)
Osasuna v Leganes (19.00 CEST)
Valencia v Barcelona (21.30 CEST)
Real Sociedad v Rayo Vallecano (19.00 CEST)
Mallorca v Real Madrid (21.30 CEST)
Real Valladolid v Espanyol (19.00 CEST) Villarreal v Atletico Madrid (21.30 CEST)

Opening fixture: Manchester United v Fulham (21.00 CEST)
Ipswich Town v Liverpool (13.30 CEST) Arsenal v Wolves (16.00 CEST) Everton v Brighton & Hove Albion (16.00 CEST) Newcastle v Southampton (16.00 CEST) Nottingham Forest v Bournemouth (16.00 CEST) West Ham United v Aston Villa (18.30 CEST)
Brentford v Crystal Palace (15.00 CEST)
Chelsea v Manchester City (17.30 CEST)
Leicester City v Tottenham Hotspur (21.00 CEST)

Opening fixture: Le Havre v Paris Saint-Germain (20.45 CEST)
Stade Brestois v Olympique Marseille (17.00 CEST) Stade de Reims v Lille (19.00 CEST) Monaco v Saint Etienne (21.00 CEST)
Auxerre v Nice (15.00 CEST) Montpellier v Strasbourg (17.00 CEST) Toulouse v Nantes (17.00 CEST) Angers v Lens (17.00 CEST) Stade Rennais v Olympique Lyon (20.45 CEST)
Opening fixtures: Parma v Fiorentina (18.30 CEST), Genoa v Inter Milan (18.30 CEST)
Empoli v Monza (20.45 CEST)
Milan v Torino (20.45 CEST)
Bologna v Udinese (18.30 CEST) Hellas Verona v Napoli (18.30 CEST) Cagliari v Roma (20.45 CEST) Lazio v Venezia (20.45 CEST)
Lecce v Atalanta (18.30 CEST) Juventus v Como (20.45 CEST)

Opening fixture: Borussia Monchengladbach v Bayer Leverkusen (20.30 CEST)
RB Leipzig v Hoffenheim (15.30 CEST) Hoffenheim v Holstein Kiel (15.30 CEST) Freiburg v Stuttgart (15.30 CEST) Augsburg v Werder Bremen (15.30 CEST) Mainz 05 v Union Berlin (15.30 CEST) Borussia Dortmund">Borussia Dortmund v Eintracht Frankfurt (18.30 CEST)
25 August
Wolfsburg v Bayern Munich (15.30 CEST)
St Pauli v Heidenheim (17.30 CEST)