UTC+01:30 is an identifier for a time offset from UTC of +01:30.
History It was used by the then-governments of the Orange Free State, Transvaal and the Cape Colony from 1892 to 1903 in what is now South Africa.Time Changes in Johannesburg Over the Years. TimeAndDate.com. Retrieved 9 May 2021. This time zone was also used briefly by the former German South West Africa (present-day Namibia).
See also History of time zones in Namibia History of time zones in South Africa
References