| Rosario Lomira | Central Time | 03:00 |
| Rosario Loleta | Pacific Time | 05:00 |
| Rosario Lolo | Mountain Time | 04:00 |
| Rosario Lommerange | Central European Time | -04:00 |
| Rosario London | United Kingdom Time | -03:00 |
| Rosario London | United Kingdom Time | -03:00 |
| Rosario London | United Kingdom Time | -03:00 |
| Rosario London | United Kingdom Time | -03:00 |
| Rosario London | United Kingdom Time | -03:00 |
| Rosario Londonderry | Eastern Time | 02:00 |
| Rosario Locarno | Central European Time | -04:00 |
| Rosario Loanhead | United Kingdom Time | -03:00 |
| Rosario Lo Barnechea | Chile Time | 00:00 |
| Rosario Llechryd | United Kingdom Time | -03:00 |
| Rosario Llanidloes | United Kingdom Time | -03:00 |
| Rosario Llanrwst | United Kingdom Time | -03:00 |
| Rosario Llançà | Central European Time | -04:00 |
| Rosario Ljungby | Central European Time | -04:00 |
| Rosario Loiano | Central European Time | -04:00 |
| Rosario Loganville | Eastern Time | 02:00 |
| Rosario Lohne | Central European Time | -04:00 |
| Rosario Logan Central | Eastern Australia Time | -13:00 |
| Rosario Loganholme | Eastern Australia Time | -13:00 |
| Rosario Lochwinnoch | United Kingdom Time | -03:00 |
| Rosario Lock Haven | Eastern Time | 02:00 |
| Rosario Lochranza | United Kingdom Time | -03:00 |
| Rosario Loddon | United Kingdom Time | -03:00 |
| Rosario Lillois-Witterzée | Central European Time | -04:00 |
| Rosario Limbourg | Central European Time | -04:00 |
| Rosario Limburg | Central European Time | -04:00 |
| Rosario Limerick | Ireland Time | -03:00 |
| Rosario Lince | Peru Time | 02:00 |
| Rosario Limoux | Central European Time | -04:00 |
| Rosario Lititz | Eastern Time | 02:00 |
| Rosario Litomysl | Central European Time | -04:00 |
| Rosario Little Plumstead | United Kingdom Time | -03:00 |
| Rosario Little River | New Zealand Time | -16:00 |
| Rosario Little River | Eastern Time | 02:00 |
| Rosario Littlehampton | Central Australia Time | -13:30 |
| Rosario Littlehempston | United Kingdom Time | -03:00 |
| Rosario Little Silver | Eastern Time | 02:00 |
| Rosario Littleborough | United Kingdom Time | -03:00 |
| Rosario Liverpool | Eastern Time | 02:00 |
| Rosario Lismore | Eastern Australia Time | -14:00 |
| Rosario Lisbon | Eastern Time | 02:00 |
| Rosario Lisbane | United Kingdom Time | -03:00 |
| Rosario Lisboa | Western European Time | -03:00 |
| Rosario Lisboa | Western European Time | -03:00 |
| Rosario Lipa | Philippine Time | -11:00 |
| Rosario Linthicum Heights | Eastern Time | 02:00 |