Year 4 Month 9
Month 9 where the days kind of overlap with the Gregorian days. September 1st falls on 9~1 of the 13-Month Calendar.
The Week, Month, Quarter, and Year all being on Thursday this year.
Day 20 and 21 are the last day of Quarter 2 and first day of Quarter 3. The Equinox falls on Day 22, September 22nd. While this is often considered the day where the length of day and night are equal, however, that’s not the case. The day and night are of equal length on different dates depending on the line of latitude of where you live.