Je was op zoek naar: date period (Engels - Tagalog)

period
ilocano

loan period
tagal ng utang

jōmon period
panahong jōmon

what's the start date of you last period
petsa ng pagsisimula ng huling panahon

this custom dates from the edo period.
itong kostumbre'y noon pang panahong edo.

the duration of two periods start date
nakaraang obulasyon

menstrual periods
panregla