<prompt> Refer to the passage below and then answer the question afterwards in the same language as the passage: Passage: For historical reasons, the versions of Windows that dont support NTFS all keep time internally as local zone time, and therefore so do all file systems other than NTFS that are supported by current versions of Windows. Izvi zvinoreva kuti kana mafaira ari kukopwa kana kutamiswa pakati NTFS uye non-NTFS partitions, iyo OS inoda kushandura timestamps on the fly. Asi kana mamwe mafaira akaendeswa kana zuva rekuchengetedza nguva DST riri kushanda, uye mamwe mafaira akaendeswa kana nguva yakajairwa iri kushanda, panogona kunge paine kusajeka mukushandurwa. Somugumisiro, kunyanya nguva pfupi mushure meimwe yemazuva ayo nguva yenzvimbo inochinja, vashandisi vanogona kuona kuti mamwe mafaera ane timestamps asina kururama neawa rimwe. Nekuda kwekusiyana kwekushandisa kweDST munzvimbo dzakasiyana, izvi zvinogona kukonzera kukanganisa kwemwedzi 4 kusvika kumaawa 12 mune chero timestamp.  <response>: 4 Zvikamu 