| Corning Saxonburg | Eastern Time | 00:00 |
| Corning Anna Maria | Eastern Time | 00:00 |
| Corning Sayalonga | Central European Time | -05:00 |
| Corning Ankola | India Standard Time | -09:30 |
| Corning Anna's Retreat | Atlantic Time | 00:00 |
| Corning Annandale | Eastern Australia Time | -15:00 |
| Corning Amarante | Western European Time | -04:00 |
| Corning Amaravati | India Standard Time | -09:30 |
| Corning Ambala Cantt | India Standard Time | -09:30 |
| Corning Ambler | Eastern Time | 00:00 |
| Corning Ambleside | United Kingdom Time | -04:00 |
| Corning America | Central European Time | -05:00 |
| Corning Alconaba | Central European Time | -05:00 |
| Corning Alcochete | Western European Time | -04:00 |
| Corning Alenquer | Western European Time | -04:00 |
| Corning Alexander Heights | Western Australia Time | -12:00 |
| Corning Alexandria Bay | Eastern Time | 00:00 |
| Corning Al Mudayq | Gulf Standard Time | -08:00 |
| Corning Alcanar | Central European Time | -05:00 |
| Corning Al-Mamurah | Central European Time | -05:00 |
| Corning Alfonso Lista | Philippine Time | -12:00 |
| Corning Alfornelos | Western European Time | -04:00 |
| Corning Alger Centre | Central European Time | -05:00 |
| Corning Algerias | Colombia Time | 01:00 |
| Corning Algermissen | Central European Time | -05:00 |
| Corning Alhos Vedros | Western European Time | -04:00 |
| Corning Altona | Eastern Australia Time | -15:00 |
| Corning Alhandra | Western European Time | -04:00 |
| Corning Algood | Central Time | 01:00 |
| Corning Algiers | South Africa Standard Time | -06:00 |
| Corning Algoma | Central Time | 01:00 |
| Corning Alvarado | Central Time | 02:00 |
| Corning Altona North | Eastern Australia Time | -15:00 |
| Corning Altstätten | Central European Time | -05:00 |
| Corning Amakusa | Japan Time | -13:00 |
| Corning Alzenau | Central European Time | -05:00 |
| Corning Alvor | Western European Time | -04:00 |
| Corning Alverca do Ribatejo | Western European Time | -04:00 |