The abbreviation for the singular month is mo. The abbreviation for the plural months is mos.
Mo is the correct abbreviation of month if used in a singular form. Mos. is the plural abbreviation of month.
Mth
ULT
Aug.
Mar.
Jan.
The conventional abbreviation for the month of March is "Mar." In some contexts where space is tight, a one- or two-letter abbreviation is used for each month, but that is not standard practice.
'Jan' is a common abbreviation for the month 'January', which is named after 'Janus', the Roman god of doorways.
No, the month of May already has a short enough name not to need an abbreviation.
peen
The abbreviation "ult." stands for the Latin "ultimo," or last-a date last month, during the preceding month. The abbreviation "ult" is often found in pre-1900 correspondence and in other early sources