Wiktionary
inst.
abbr. 1 institute. 2 instant: of the current month.
Usage examples of "inst.".
The Tokan delegation is now in quarantine CaUisto Reception Center, but is expected to reach Earthport Prime on 5th inst. at 0947 hours GMT.
Telegram Company to correct an erroneous announcement made in their Brisbane telegram of the 2d inst., published in our impression of the 5th inst.