Asır means century, can be used such as 15. asır-15th century. Does this help?
Um as "asr" means a period of time both in Persian and Arabic, I thought it can be the same in Turkish. For example ,in Persian, "asr-e-parinesangi" means "paleolithic era or period". What's the word of this meaning in Turkish?
haftadır is hafta+ DIr you use DIr when you state a fact! like when you say 'a year is 52 weeks' = Bir yıl elli beş haftadır
It says I need to use, 'one week' rather then 'a week' but a year, a day etc works. Any reason why this would be?