15th Day of Lunar 10 Month is considered as the Manifestation Anniversary of Lord Shui Guan whereas in Taoism, it is known as the Day of Inspection (考校日) on Mortal Realm of Shui Guan Da Di.
On this Day, Taoists & Chinese will visit Temples dedicated to San Guan Da Di (三官大帝) to pay their respects and request for elimination of Unforseen Disasters (解厄).
For those who are interested in honouring Shui Guan Da Di, here are a few Temples in Singapore that you can visit:
1) Havelock Road Tee Kong Temple
2) Bukit Merah View Lei Yin Si