Telling the time.
Goedenavond. Het is nu zondag, tien over half één. Vandag is het vijf juli. Het is hier warm, en soms erg warm. Ik hou van de zomer.
Good job! Keep in mind that 'één' refers to the numeral one, while just 'een' is the article. As a general rule, numbers smaller than 10 are written out full, so you'd have 'acht, negen, 10, 11' and so on.