Google posted in the Google AdSense Help forums that payments will be made a bit later than normal due to the timing of when the weekend falls out.
Google said in the thread that instead of payment going through around March 22nd, it is likely to go through March 24th instead. Here is Google's explanation of why:
During most months, we typically begin initiating normal monthly scheduled payments at approximately midnight GMT on the 22nd calendar day of each month and send the instructions to our bank later that day. Due to this date falling on a weekend this month and to align with bank business days, we will begin initiating March regularly scheduled payments later this weekend for accounts with no payment holds and a balance exceeding the minimum payment threshold. We expect our bank to receive and begin processing your payment instructions around mid-day (GMT) on Monday, 24 March. For EFT or wire transfer payments, the payment clearing processes in various locations may take three or more additional banking days before you receive the funds in your bank account.
Google says expect to get payment posted to your bank account before the end of the month or maybe sooner.
If you have additional questions or concerns, feel free to ask them in the forums.
Forum discussion at Google AdSense Help.