せんせんげつ先々月sensengetsu
1.
The month that occurred two months prior to the current month.
2.
The month that immediately follows the month that is before last month.
3.
The month that comes before the previous month, occurring two months ago.
The month that occurred two months prior to the current month.
The month that immediately follows the month that is before last month.
The month that comes before the previous month, occurring two months ago.