Mine was also taken on March 21st. However last year it was taken twice, first on march 21st and again on March 24th.
I had done a personal tax return in early March and was due a refund. They deducted the LPT from the refund even though it was already paid. Some battle to get it back and there were 2 propertys involved. I won't be so quick to do a tax return in future