Ten Capital Cities Longitudinally and Latitudinally Closest to Mysterious City, and Guess That City #30

Guess ten capitals that closest to the secret non-capital city by longitude and other ten for latitude. And also, try to guess that city as well.
Cities can appear more than once if they appear on both lists.
Other version: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29
Quiz by PSTSCCH
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Last updated: January 9, 2017
First submittedJanuary 9, 2017
Times taken64
Average score76.2%
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Latitudinally
1st
Havana
2nd
Muscat
3rd
Dhaka
4th
Abu Dhabi
5th
Riyadh
6th
Taipei
7th
Nassau
8th
Hanoi
9th
Doha
10th
Manama
Longitudinally
1st
Bandar Seri Begawan
2nd
Beijing
3rd
Ulaanbaatar
4th
Jakarta
5th
Hanoi
6th
Phnom Penh
7th
Manila
8th
Singapore
9th
Taipei
10th
Vientiane
Where is that city?
Guangzhou, China
+1
Level 48
Jan 9, 2017
Put that in your "Caveat / Explanations" box in "Step 1". (It works on any places, I think. I have used that on quiz explanations, quiz instructions, even comments. Like this.