A past marker does not exist in Singapore Bazaar Malay. However, temporal adverbs are used, which usually occur with a rising intonation contour mostly (i) at the beginning of the sentence, (ii) at the end of the
sentence, or (iii) before the predicate they modify as in the case of sekarang ‘now’. The most common temporal adverbs used as past markers are semalam 'yesterday' and dulu 'before' which refers to the remote past.
Source: Aye 2005: 170