This is probably a question that has been asked a million times before, and if so, I apologise.
Basically, if it's summer in the southern hemisphere (or whatever the flat earthers call what lies south of the equator), then how is it possible to have days longer than 12 hours, given that the sun is a spotlight? I simply cannot understand how this could be possible.

For example, if it's 12.00 in Cape Town, South Africa, then it must be about 07.00 in Sao Paulo, Brazil and about 19.00 in Perth, Australia. All should be in daylight in the southern summer. If the earth were a simple spotlight, then nearly the whole world should be in daylight for this to be possible!
Hope somebody can help me. I want to believe!!!
[Thanks to Chrissetti for the pic]