How persons with dementia may experience time, temporal problems and temporal adaptations in their everyday lives is explored. The clinical implementation process and outcome of time aid ...interventions in five cases are also described. Data were collected through initial interviews with five participants, diagnosed with dementia, and with three spouses. Thereafter, time aids were chosen for intervention in each case. During the intervention, data were collected through fieldnotes and interviews, including evaluative interviews closing the interventions. The participants described experiences of temporal rhythms and extensions. Their temporal problems mainly concerned temporal relationships and coherence, and "knowing when" and "how long". They individually met the problems with strategies that aimed to overall decrease the effects of the temporal problems in general, as well as with direct and conscious attempts to address problems mainly concerning temporal orientation. When time aids were used, difficulty "knowing when" seemed to be most responsive to aids. However, the success of the time aid interventions was limited, as was the success of the spontaneously used strategies. Motivation and insight seemed to be important, as well as the participants' present and former attitudes to temporality. Possible implications for occupational therapy interventions are discussed, considering the clinical and piloting nature of the study.