Later in the day Horsham Museum and Art Gallery is celebrating by launching its programme of ‘Friday Lates’ – welcoming visitors in the evenings over the summer months to enjoy refreshments and live music and entertainment. The museum is celebrating Sussex Day with traditional Sussex dancing in its beautiful walled garden, refreshments will also be served. Have you read? Plans hot up for four-day South Downs music festival Jewellers celebrate 20 years of business in Horsham There will be further entertainment in Horsham’s historic Carfax area in the early evening with live performances on the Carfax bandstand and an array of drink and street food stalls.