how to write 02-october-2015 in 5 letters

without using numbers?

You can't!

Yesterday, you could have, though: TODAY

gotilla

To write "02-October-2015" in 5 letters without using numbers, you can use the month's abbreviation and the first letter of each word. Here's how you can do it:

1. October —> O
2. Two —> T
3. Zero —> Z
4. One —> O
5. Five —> F

Put them together, and you get "OTZOF," which represents "02-October-2015" in 5 letters.