Originally Posted by
xXHoax
If you have read on the Genitive case, you know that the 'г' in adjectives' genitive endings is pronounced as a 'в'. Сегодня is indeed pronounced "севодня"
The word сегодня is made up of: сего [old word for 'this'] дня ['day'], both words in the genitive, from
сей день
This doesn't occur often; but always be on the lookout for words within words.
The same сей is found in сейчас - this hour --- "now"
This is why I would recommend an approach to learning that incorporates as many different sources as possible, because where one source lacks another will excel.