In the UK, it is currently

Tuesday the 17th of September, 2019 at 12:04am UK time

That's:
September 16, 2019, 11:04 pm in Abidjan
September 17, 2019, 8:34 am in Adelaide
September 17, 2019, 1:04 am in Amsterdam
September 17, 2019, 11:04 am in Auckland
September 17, 2019, 1:04 am in Berlin
September 16, 2019, 8:04 pm in Bermuda
September 16, 2019, 6:04 pm in Bogota
September 17, 2019, 1:04 am in Bratislava
September 16, 2019, 8:04 pm in Brasilia
September 16, 2019, 8:04 pm in Buenos Aires
September 16, 2019, 7:04 pm in Caracas
September 16, 2019, 6:04 pm in Chicago
September 17, 2019, 1:04 am in Copenhagen
September 16, 2019, 5:04 pm in Costa Rica
September 17, 2019, 3:04 am in Dubai
September 17, 2019, 12:04 am in Dublin
September 16, 2019, 5:04 pm in Guatemala
September 17, 2019, 2:04 am in Helsinki
September 17, 2019, 3:34 am in Kabul
September 17, 2019, 2:04 am in Kampala
September 17, 2019, 12:04 am in Lisbon
September 17, 2019, 1:04 am in Longyearbyen
September 16, 2019, 4:04 pm in Los Angeles
September 17, 2019, 1:04 am in Madrid
September 16, 2019, 7:04 pm in Manaus
September 17, 2019, 7:04 am in Manila
September 17, 2019, 2:04 am in Mayotte
September 17, 2019, 9:04 am in Melbourne
September 16, 2019, 6:04 pm in Mexico City
September 16, 2019, 7:04 pm in Montreal
September 17, 2019, 2:04 am in Moscow
September 17, 2019, 2:04 am in Nairobi
September 16, 2019, 7:04 pm in New York
September 17, 2019, 1:04 am in Paris
September 17, 2019, 7:04 am in Perth
September 17, 2019, 1:04 am in Podgorica
September 17, 2019, 2:04 am in Qatar
September 17, 2019, 9:04 am in Queensland
September 16, 2019, 11:04 pm in Reykjavik
September 17, 2019, 2:04 am in Riga
September 17, 2019, 1:04 am in Rome
September 17, 2019, 11:04 am in the South Pole
September 17, 2019, 1:04 am in Stockholm
September 16, 2019, 7:04 pm in Toronto
September 16, 2019, 4:04 pm in Vancouver
September 17, 2019, 9:04 am in Victoria
September 17, 2019, 1:04 am in Vienna
September 17, 2019, 1:04 am in Warsaw
September 17, 2019, 1:04 am in Zurich

These time zones are provided for your convenience, but are not guaranteed. You may want to double check the time wherever you happen to be