On arrival
- San Diego and Tijuana are in the same time zone — no jet lag adjustment needed.
Jet lag plan
San Diego and Tijuana share the same time zone.
About 25 km southeast · approximately 1-hour non-stop flight · a short-haul flight.
The route from San Diego, United States to Tijuana, Mexico covers roughly 25 kilometres in a southeast direction. At standard jet cruise speed plus a one-hour allowance for taxi, climb, and descent, a non-stop flight takes about 1 hours. Both cities sit in the northern hemisphere, so the seasonal direction of daylight (longer days in June, shorter in December) matches between origin and destination.
San Diego is in the subtropics. Day length varies by roughly two hours between summer and winter; light remains a reliable circadian cue most of the year. Tijuana is in the subtropics. Day length varies by roughly two hours between summer and winter; light remains a reliable circadian cue most of the year.
Standard 09:00–18:00 working hours at both ends of this route overlap by approximately 9 hours. In San Diego that window runs 09:00 to 18:00; in Tijuana it is 09:00 to 18:00. This is the realistic window for live meetings, customer calls, or pair work without forcing either end out of normal hours.
Both cities observe daylight saving time. The hour offset on this route can shift by one hour twice a year (typically March and October/November), and the two clocks rarely change on the exact same date — expect a transient 1-hour mismatch for two to three weeks per transition.
The great-circle distance from San Diego to Tijuana is about 25 kilometres. A typical non-stop flight takes around 1 hours at standard cruise speed; routes with connections add two to four hours.
San Diego and Tijuana share the same time zone, so there is no clock offset on this route.
No circadian shift is required between these two cities.
For a shift of 0 hours, melatonin offers little benefit beyond what consistent light exposure already provides. The Cochrane review on jet-lag melatonin shows the strongest effects on shifts of five hours or more.
For a shift under two hours, pre-trip adjustment is usually not worth the effort.
Chronotype does not affect adjustment on a same-time-zone route.