https://donjon.bin.sh/fantasy/calendar/#
insert this in the save/restore tab:
{"year_len":350,"events":1,"n_months":7,"months":["Saap","Aag","Pani","Rosani","Maila","Hava","Taalvar"],"month_len":{"Saap":50,"Aag":50,"Pani":50,"Rosani":50,"Maila":50,"Hava":50,"Taalvar":50},"week_len":7,"weekdays":["Sun Day","Moon Day","Hill Day","Valley Day","Mountain Day","Silver Day","Gold Day"],"n_moons":1,"moons":["Luna"],"lunar_cyc":{"Luna":29.89},"lunar_shf":{"Luna":20},"year":1207,"first_day":0,"notes":{"1007-7-12":"The Day of Ribbons","1017-7-12":"The Day of Ribbons","1207-7-12":"The Day of Ribbons","1207-6-41":"Wanderers Gather","1207-7-26":"Ancient Dragon is Summoned","1207-7-25":"Party's day of silence","1207-7-28":"Grimloc Dies","1207-7-31":"","1207-7-33":"","1207-7-39":"","1207-7-42":"Party Enters Mist","1208-2-9":"","1208-2-1":"Party Exits The Mist"}}