The Chinese (yue) and Japanese (tsuki) meaning of this sign is "monthly" or "moon". For instance, people are reminded of a monthly due amount with it.
The Japanese 'Monthly amount' button emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the symbols
category. Because the Japanese 'Monthly amount' button emoji has been around for quite some time, it should display correctly in the majority of operating systems.