Calculate the arrival times for Mandisa in Beijing and Bongwa in London, considering flight durations and time zone differences.

Mandisa departs from Bangkok at 05:00 on 7 October.
Flight duration: 5 hours.
Destination: Beijing.
Bangkok time zone (BKK): UTC+7.
Beijing time zone (BJT): UTC+8.

Beijing is 1 hour ahead of Bangkok (UTC+8 vs UTC+7).

Mandisa will arrive in Beijing at $\boxed{\text{11:00 on 7 October}}$.

1.1.2

Assumption: Based on the information in Frame 2, this question is likely asking about Bongwa's arrival in London, not Mandisa's.

Bongwa departs from OR Tambo International Airport (Johannesburg) at 20:00 on 21 October.
Flight duration: 11 hours.
Destination: London.
Johannesburg time zone (SAST): UTC+2.
London time zone (BST) on 21 October: UTC+1 (London was still observing Daylight Saving Time, British Summer Time, on this date in 2018).

London is 1 hour behind Johannesburg (UTC+1 vs UTC+2).

Bongwa will arrive in London at $\boxed{\text{06:00 on 22 October}}$.

1.1.3

a)

South Africa (Johannesburg) is UTC+2.
London during DST (British Summer Time, BST) is UTC+1.

South Africa is 1 hour ahead of London.

The answer to Bongwa's question is $\boxed{\text{1 hour}}$.

b)
One reason for the answer in 1.1.3(a) is that South Africa Standard Time (SAST) is UTC+2, while London, when observing Daylight Saving Time (British Summer Time, BST), is UTC+1.