Searching for Chinese characters by sounds? (Weird calendar problem)

Hello everyone! I am developing the calendar for my world and have an odd problem I wonder if someone knows a resource for that may help.

I now set my D&D campaign in my world and so I don't want my calendar to be so alien to my players that they don't use it, so I am aiming to have it pretty close to the Gregorian calendar (there are 360 days, 90 day seasons, 7 days a week, etc.). As such, I want the days of the weeks to have similar names to ours, kinda like how the Skyrim calendar has Sundas, Morndas, Tirdas, etc. The culture that would have informed \*my\* days of the week is a Chinese allegory, so I would like to search for Chinese characters using these English sounds E.G. search "mon" and see if there are any matches.

Does anyone know of just a resource? Or could point me to somewhere that would?