Steve Allen wrote:
I cannot say for sure whether this is a mistake, an official doing these calculations the way things used to work, or whether outlying towns still set their clocks using a stick in the ground.
tzdb cites a Portuguese decree dated 1911-05-26 <https://dre.pt/application/dir/pdf1sdip/1911/05/12500/23132313.pdf> saying that Mozambique switched to +02 at 1912-01-01 00:00 +02, and I can't find anything online suggesting that this change didn't stick. For what it's worth, the 2012 Atlas de Precipitação Moçambique <http://www.inam.gov.mz/images/Climatologia/ATLAS-INAM-FINAL-Por-Ser-Printada...>, also published by INAM, says on page 2 that precipitation readings are taken at 07:00 UTC (09:00 local time). That being said, Mozambique (or a good chunk of it, anyway) was ruled by Arab traders for centuries, and the Arab world has a history of disagreeing with Western timekeeping, so it's conceivable that solar time survives in some circles.