The Spring Lantern Festival falls on the 15th day of the first lunar month. This is informally known as "Chinese Valentine's Day".
Lovers and couples spend time together for colourful lanterns that hunging in parks. Nowaday, it becomes a good opportunty for them to dinning out and dating. Sending flower will make this a special day as well.
19th Feb 2019 is the day you need to mark on your Western calendar this year.