Hi, I was wandering if someone could help me write this date (26/09/1990) and (twenty sixth September nineteen ninety) in sanskrit.

Thanx:)

Here are the numbers, 0-9, in sanskrit. Make with it what you will:

० १ २ ३ ४ ५ ६ ७ ८ ९
0 1 2 3 4 5 6 7 8 9

In words:
षड्विंशति : 26
भाद्रोत्तरार्ध / आश्विनपूर्वार्ध : September (I found both of these as possibilities)
एकोनविम्शति / नवदश : 19 (second is used as both 19 and 19th)
नवति : 90
सहस्रतम नवम् शतम् नवति : 1990 (one thousand, nine hundred ninety, instead of nineteen ninety)