| Thoothukudi Athol | New Zealand Time | -07:30 |
| Thoothukudi Athy | Ireland Time | 05:30 |
| Thoothukudi Ay | Central European Time | 04:30 |
| Thoothukudi Axapusco | Central Time | 11:30 |
| Thoothukudi Avon | Eastern Time | 10:30 |
| Thoothukudi Avry | Central European Time | 04:30 |
| Thoothukudi Avsallar Belediyesi | Turkey Time | 02:30 |
| Thoothukudi Azalea | Pacific Time | 13:30 |
| Thoothukudi Azambuja | Western European Time | 05:30 |
| Thoothukudi Azay-le-Rideau | Central European Time | 04:30 |
| Thoothukudi Ayoor | India Standard Time | 00:00 |
| Thoothukudi Ayer Baloi | Malaysia Time | -02:30 |
| Thoothukudi Ayer Keroh | Malaysia Time | -02:30 |
| Thoothukudi Ayer's Cliff | Eastern Time | 10:30 |
| Thoothukudi Ayia Napa | Eastern European Time | 03:30 |
| Thoothukudi Ayden | Eastern Time | 10:30 |
| Thoothukudi Ashprington | United Kingdom Time | 05:30 |
| Thoothukudi Ashwood | Eastern Australia Time | -05:30 |
| Thoothukudi Arossim | India Standard Time | 00:00 |
| Thoothukudi Arpora | India Standard Time | 00:00 |
| Thoothukudi Arlesheim | Central European Time | 04:30 |
| Thoothukudi Arklow | Ireland Time | 05:30 |
| Thoothukudi Arkula | India Standard Time | 00:00 |
| Thoothukudi Arncliffe | Eastern Australia Time | -05:30 |
| Thoothukudi Arnedo | Central European Time | 04:30 |
| Thoothukudi Armstrong | Pacific Time | 13:30 |
| Thoothukudi Appenzell District | Central European Time | 04:30 |
| Thoothukudi Apple Springs | Central Time | 11:30 |
| Thoothukudi Applecross | Western Australia Time | -02:30 |
| Thoothukudi Arcugnano | Central European Time | 04:30 |
| Thoothukudi Apollo Beach | Eastern Time | 10:30 |
| Thoothukudi Arden | Eastern Time | 10:30 |
| Thoothukudi Ardross | Western Australia Time | -02:30 |
| Thoothukudi Ardsley | Eastern Time | 10:30 |
| Thoothukudi Åre | Central European Time | 04:30 |
| Thoothukudi Ariana | Central European Time | 04:30 |
| Thoothukudi Argenbühl | Central European Time | 04:30 |
| Thoothukudi Argent-sur-Sauldre | Central European Time | 04:30 |