I need my XTZ balance for a specific date in past. I am not sure how to get this as most blockexplorers do not offer a date field for searching historical balances. Can somebody help me?
You can get historical balance (at the specified datetime or block level) via TzKT API.
Examples:
The baking bad block explorer lets you filter by date, by clicking the calendar icon: https://tzkt.io/
Paste the address you are interested in, into the search bar, then filter by date