Table:
text: Ugly Betty (season 1)
United Kingdom
United Kingdom
Episode_ Title Airdate Rating_Millions Rank_
10 Lose the Boss March 2, 2007 2.98m #8
11 Fake Plastic Snow March 9, 2007 2.71m #9
12 Sofia`s Choice March 30, 2007 2.36m #12
13 In or Out April 6, 2007 2.16m #12
14 I`m Coming Out April 13, 2007 2.48m #5
15 Brothers April 20, 2007 2.58m #5
16 Derailed April 27, 2007 2.25m #15
17 Icing on the Cake May 4, 2007 2.34m #7
18 Don`t Ask, Don`t Tell May 11, 2007 2.24m #13
19 Punch Out May 18, 2007 2.63m #10
20 Petra-Gate May 25, 2007 2.51m #6
21 Secretaries` Day May 25, 2007 2.60m #4

Question: On what date was the episode Ugly Betty (Season 1) "Petra-Gate" aired in the UK?