Time difference between Hertford, UK and San Juan, Puerto Rico:
-4:0 hours.Hertford is 4:0 hours ahead of San Juan. When it is 9:00 am in San Juan, it is 1:00 pm in Hertford.
Hertford to San Juan time converter (GMT to AST):
San Juan ↔ Hertford (Reverse this table)| 12am Hertford time = | 8:00 pm San Juan time |
| 12:30am Hertford time = | 8:30 pm San Juan time |
| 1am Hertford time = | 9:00 pm San Juan time |
| 1:30am Hertford time = | 9:30 pm San Juan time |
| 2am Hertford time = | 10:00 pm San Juan time |
| 2:30am Hertford time = | 10:30 pm San Juan time |
| 3am Hertford time = | 11:00 pm San Juan time |
| 3:30am Hertford time = | 11:30 pm San Juan time |
| 4am Hertford time = | 12:00 am San Juan time |
| 4:30am Hertford time = | 12:30 am San Juan time |
| 5am Hertford time = | 1:00 am San Juan time |
| 5:30am Hertford time = | 1:30 am San Juan time |
| 6am Hertford time = | 2:00 am San Juan time |
| 6:30am Hertford time = | 2:30 am San Juan time |
| 7am Hertford time = | 3:00 am San Juan time |
| 7:30am Hertford time = | 3:30 am San Juan time |
| 8am Hertford time = | 4:00 am San Juan time |
| 8:30am Hertford time = | 4:30 am San Juan time |
| 9am Hertford time = | 5:00 am San Juan time |
| 9:30am Hertford time = | 5:30 am San Juan time |
| 10am Hertford time = | 6:00 am San Juan time |
| 10:30am Hertford time = | 6:30 am San Juan time |
| 11am Hertford time = | 7:00 am San Juan time |
| 11:30am Hertford time = | 7:30 am San Juan time |
| 12pm Hertford time = | 8:00 am San Juan time |
| 12:30pm Hertford time = | 8:30 am San Juan time |
| 1pm Hertford time = | 9:00 am San Juan time |
| 1:30pm Hertford time = | 9:30 am San Juan time |
| 2pm Hertford time = | 10:00 am San Juan time |
| 2:30pm Hertford time = | 10:30 am San Juan time |
| 3pm Hertford time = | 11:00 am San Juan time |
| 3:30pm Hertford time = | 11:30 am San Juan time |
| 4pm Hertford time = | 12:00 pm San Juan time |
| 4:30pm Hertford time = | 12:30 pm San Juan time |
| 5pm Hertford time = | 1:00 pm San Juan time |
| 5:30pm Hertford time = | 1:30 pm San Juan time |
| 6pm Hertford time = | 2:00 pm San Juan time |
| 6:30pm Hertford time = | 2:30 pm San Juan time |
| 7pm Hertford time = | 3:00 pm San Juan time |
| 7:30pm Hertford time = | 3:30 pm San Juan time |
| 8pm Hertford time = | 4:00 pm San Juan time |
| 8:30pm Hertford time = | 4:30 pm San Juan time |
| 9pm Hertford time = | 5:00 pm San Juan time |
| 9:30pm Hertford time = | 5:30 pm San Juan time |
| 10pm Hertford time = | 6:00 pm San Juan time |
| 10:30pm Hertford time = | 6:30 pm San Juan time |
| 11pm Hertford time = | 7:00 pm San Juan time |
| 11:30pm Hertford time = | 7:30 pm San Juan time |
Hertford:
| Time: | Thu, 13 Dec 2018 GMT |
| Sun: | ↑7:57 am, ↓3:51 pm |
| Day Length: | 7 hrs 54 mins |
| Time zone: | GMT - Greenwich Mean Time (UTC/GMT) |
| DST started on | 25 March 2018 |
| DST ended on | 28 October 2018 |
| Time: | Wed, 12 Dec 2018 AST |
| Sun: | ↑6:47 am, ↓5:50 pm |
| Day Length: | 11 hrs 3 mins |
| Time zone: | AST - Atlantic Standard Time (UTC/GMT -4) |