Why do I struggle with aligning arrival time and allotted meeting slot with ADHD
Many adults with ADHD find it difficult to arrive at the right time for meetings or appointments, often running late, cutting it close, or arriving far too early. This challenge is not about laziness or disregard for others’ time. It reflects how ADHD affects the brain’s ability to estimate durations, plan backwards from a future event, and manage transitions. According to NICE guidance on ADHD, time perception, organisation and planning are commonly affected in ADHD, and structured strategies are essential to support punctuality and daily functioning.
How ADHD affects time perception
Research consistently shows that ADHD is linked with differences in time estimation, time reproduction and duration discrimination. A 2023 review in the International Journal of Environmental Research and Public Health found that adults with ADHD tend to underestimate how long things take and often misjudge when to start getting ready or leave, which helps explain recurring lateness. Similarly, a 2021 review in Brain Sciences reported that adults with ADHD frequently experience time as moving faster than expected, which leads to errors in judging task length and difficulty synchronising with external schedules.
This issue is rooted in how the ADHD brain handles attention, working memory and self-regulation. These executive functions allow a person to hold a plan in mind, judge the passing of time and act at the right moment. When they are less efficient, it becomes harder to match internal timing with fixed schedules, especially during busy days.
Executive function and emotional factors
Executive function challenges mean people with ADHD often operate with a shortened “time horizon”, focusing mainly on the present moment. A review on ADHD and time perspective noted that this makes it harder to visualise future appointments and prepare in advance. As a result, tasks that require estimating travel or preparation time can easily run over.
The NHS highlights that attention-shifting difficulties also contribute to time-related problems. People with ADHD may stay too long on a current task and lose track of time or leave far too early to avoid the stress of being late. Emotional factors like anxiety, shame or fear of criticism can lead to overcompensation, where someone consistently arrives long before the scheduled time to reduce uncertainty or guilt.
Strategies to align arrival times with schedules
NICE and NHS guidance agree that the most effective approach combines medication, CBT-style time management training and structured environmental supports. Adults with ADHD are encouraged to use digital tools and practical planning methods to make time more visible and predictable.
Reverse scheduling and buffer blocks are useful. Planning backwards from the meeting time and scheduling “start getting ready” and “leave now” reminders in advance helps ensure preparation time is realistic. The CNWL NHS ADHD Adjustments Guide recommends adding 10 to 15 minutes of buffer time to reduce stress and absorb unexpected delays.
Multiple reminders can also help. Using digital calendars to set sequential alarms, such as one the night before, one to begin preparations, and one as the signal to leave, supports prospective memory and reduces the risk of last-minute rushing.
Visualising time through tools such as analogue clocks, colour-coded calendars or wall planners makes time more tangible and easier to track. The Think ADHD resource suggests these visual supports can help adults see time passing rather than relying on an internal sense of “soon”.
Structured routines make a significant difference. Keeping preparation steps at fixed times reduces reliance on variable motivation or focus levels. NHS workplace materials recommend brief daily planning sessions at the start and end of each day to review appointments and set priorities.
Structured coaching or therapy can help reinforce these habits. Services like Theara Change offer evidence-based behavioural programmes that teach adults with ADHD to externalise time, set realistic expectations and manage transitions more effectively.
Key takeaway
According to NHS and NICE guidance, the best approach blends medication, CBT-style skills and consistent use of external time supports such as calendars, alarms and structured routines. With practice and the right tools, it becomes possible to bridge the gap between internal timing and real-world schedules, reducing stress and helping adults with ADHD feel more in sync with their commitments.
