Tomorrow
Use this to mean 'the day after tomorrow'. It's a fixed phrase.
Use this specific phrase for 'tomorrow morning'. It's a very common construction that uses 'mañana' twice, first for 'tomorrow' and second for 'morning'.
Use this for 'tomorrow afternoon'.
Use this for 'tomorrow evening' or 'tomorrow night'.
See you tomorrow.
The meeting is tomorrow morning.
What are you doing tomorrow afternoon?
The flight arrives the day after tomorrow.
I don't work tomorrow.
The word 'mañana' for 'tomorrow' is universal across the entire Spanish-speaking world. Unlike many other words, it does not have common regional alternatives.
Standard usage. 'Mañana' is used exclusively. For 'in the morning', both 'en la mañana' and 'por la mañana' are common.
Standard usage. 'Mañana' is the only word used for 'tomorrow'.
Standard usage. 'Mañana' is used just as in Latin America. For 'in the morning', 'por la mañana' is more common than 'en la mañana'.
Using 'mañana' alone to mean 'in the morning'. — The word 'mañana' means both 'tomorrow' and 'morning'. To specify 'in the morning', you must say 'por la mañana' or 'en la mañana'. For example, 'I run in the morning' is 'Corro por la mañana'.
Pronouncing 'mañana' with an 'n' sound (ma-na-na). — The letter 'ñ' (called 'eñe') is not an 'n'. It has a distinct sound, like the 'ny' in 'canyon'. Correct pronunciation is crucial for being understood.
Saying 'el mañana' to mean 'tomorrow'. — 'Mañana' as 'tomorrow' is an adverb and doesn't use an article like 'el' or 'la'. You simply say 'Mañana voy' (Tomorrow I go). 'El mañana' means 'the future' or 'the morrow' in a poetic sense, which is not what beginners usually want to say.