When does the 'iddah (waiting period) for a mother, following the death of her husband on Friday, April 6, 2012, end?

The 'iddah (waiting period) for a widow who is pregnant ends upon delivery. If she is not pregnant, her 'iddah is four months and ten days according to the lunar months. If the death occurred during the month, she observes 'iddah for the remainder of the first month, three months based on the sighting of the new moon (whether complete or incomplete), and ten days. Any days she missed from the first month, she completes in the fifth month. For example: If the 'iddah began on 14/Jumada Al-Awwal/1433 AH, then the 'iddah ends on 24/Ramadan/1433 AH.