[1] Time Ball—Fort Canning, Singapore - Time Signals on Waymarking.com (12/2/2017, 9:28:55 AM) <http://www.waymarking.com/waymarks/WMFQ93_Time_BallFort_Canning_Singapore>
[2] Fort Canning Lighthouse - Wikipedia (11/18/2017, 9:29:08 AM) <https://en.wikipedia.org/wiki/Fort_Canning_Lighthouse>
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