I've used Artemisia's (hope you don't mind) list to compile start times for each event to be attended by Will, Kate and Harry
These times are for the start of each event. That doesn't mean this is the time the royals will arrive at the event, so bear that in mind. All times courtesy of http://www.london2012.com/schedule-and-results/
Friday, 27th July
- The Duke and Duchess of Cambridge and Prince Harry will attend a reception at Buckingham Palace, hosted by The Queen, with other Members of the Royal Family for Heads of State and Government attending the opening ceremony of the London 2012 Olympic Games.
- The Duke and Duchess of Cambridge and Prince Harry will attend the Olympic Opening Ceremony at the Olympic Park.
21:00 BST, 16:00 EST, 13:00 PST 6am
Saturday, 28th July or Sunday 29th July
- The Duke of Cambridge will attend the Equestrian Events at Greenwich – The Duke will attend EITHER this event or on Sunday 29th but not both. ON BOTH DAYS THE EVENTS BEGIN AT 10:00 BST, 05:00 EST, 02:00 PST 7pm
Sunday, 29th July
- The Duke of Cambridge will attend the Football to watch Team GB at Wembley. KICK OFF - 19:45 BST, 14:45 EST, 11:45 PST 4.45am 30th July
[/COLOR]Monday, 30th July
- The Duke and Duchess of Cambridge and Prince Harry will attend the Equestrian Events at Greenwich.
12:30 BST, 07:30 EST, 04:30 PST 9.30pm
- Prince Harry will attend the 10m Diving at the Olympic Park.
15:00 BST, 10:00 EST, 07:00 PST midnight between the 30th and 31st of July
- Prince Harry and Prince William will visit Team GB House.
- The Duke of Cambridge will visit Team GB House – a small Pool will be in place.
- The Duchess of Cambridge will attend the UK’s Creative Industries Reception in the evening at The Royal Academy of Arts.
Tuesday, 31st July
- The Duke and Duchess of Cambridge and Prince Harry will attend Equestrian Events, to include the awarding of medals at Greenwich.
10:30 BST, 05:30 EST, 02:30 PST 7.30pm
- The Duke and Duchess of Cambridge and Prince Harry will visit the Athletes’ Village at the Olympic Park.
Thursday, 2nd August
- Prince Harry, President of The School Games, will attend a reception for the School Games medal winners in the morning at Clarence House.
- The Duke and Duchess of Cambridge will attend the Tennis at Wimbledon.
11:30 BST, 06:30 EST, 03:30 PST 8.30pm
Friday, 3rd August
- The Duke of Cambridge and Prince Harry will attend the Equestrian Dressage at Greenwich.
11:00 BST, 06:00 EST, 03:00 PST 8pm
- The Duke and Duchess of Cambridge will attend the Swimming at the Olympic Park.
STARTS AT 10:00 BST, 05:00 EST, 02:00 PST, RUNS ALL DAY WITH FINAL EVENT AT 20:09 BST, 15:09EST, 12:09 PST 7pm 3rd Aug/5.09am 4th Aug
Saturday, 4th August
- The Duchess of Cambridge will attend the Hockey at the Olympic Park.
STARTS AT 08:30 BST, 03:30 EST, 00:30 PST, RUNS ALL DAY UNTIL 21:15 BST, TEAM GB MATCH AT 16:00 BST 5.30pm 4th Aug-6.15am 5th Aug
Sunday, 5th August
- The Duchess of Cambridge will attend the Gymnastics at the Olympic Park.
14:00 BST, 09:00 EST, 06:00 PST 11pm
- The Duchess of Cambridge will visit Team GB House.
- The Duke and Duchess of Cambridge and Prince Harry will attend Athletics at the Olympic Park.
STARTS AT 11:00 BST, RUNS ALL DAY WITH 100M FINAL AT 21:50 BST, 16:50 EST, 13:50 PST 8pm 5th Aug-6.15am 6th Aug
Monday, 6th August
- The Duchess of Cambridge will attend the Sailing at Weymouth.
12:00 BST, 07:00 EST, 04:00 PST 9pm
Wednesday, 8th August
- Prince Harry will attend the Beach Volleyball at Horseguards Parade.
19:00 BST, 14:00 EST, 11:00 PST
4am 9th Aug
Thursday, 9th August
- The Duchess of Cambridge will attend the Synchronised Swimming at the Olympic Park.
15:00 BST, 10:00 EST, 07:00 PST midnight between the 9th and 10th Aug
- Prince Harry will visit Team GB House
- Prince Harry will attend the Athletics at the Olympic Park.
STARTS 09:00 BST, 04:00 EST, 01:00 PST AND RUNS ALL DAY UNTIL 21:20 BST, 16:20 EST, 13:20 PST
6pm 9th Aug-6.20am 10th Aug
Friday, 10th August
- The Duchess of Cambridge will attend women’s Hockey sessions (if Team GB qualifies).
STARTS AT 08:30 BST, 03:30 EST, 00:30 PST WITH GOLD MEDAL MATCH AT 20:00 BST, 15:00 EST, 12:00 PST 5.30pm 10th Aug-5am 11th Aug
Saturday 11th August
- The Duchess of Cambridge will attend the Men’s 10m Diving at the Olympic Park.
STARTS AT 10:00 BST, 05:00 EST, 02:00 PST, RUNS ALL DAY WITH FINAL AT 20:30 BST, 15:30 EST, 12:30 PST 7pm 11th Aug-5.30am 12th Aug
Sunday 12th August
- The Duchess of Cambridge and Prince Harry will attend the Olympic Closing Ceremony at the Olympic Park.
TIMING TBA
Obviously, the royals aren't going to stay all day watching diving/athletics etc., I assume they'll probably arrive in time for finals etc. We don't have times for visits to Team GB House etc. Hope this is helpful.