Could be whatchamacallit, 15 letters.
uncopyrightable
misapprehension
Ak-47 and things like an AR-15 <><><> Arrows, and a sear thrower called an atlatl.
i think 10 or 15 years after the normal yugioh it starts off at 10 years after the original yugioh and ends 13 years after the end of yugioh
It starts on September 15 and ends October 15.
Anticapitalisms Anticapitalists Antiradicalisms Automatizations Axiomatisations Axiomatizations Antidisestablish Antidepressants
It commonly starts at age 15-16 and ends at age 20.
16.25, 17.5, 18.75
Zuko- Starts 16 yrs. Ends 17 yrs. Aang- Starts 12 yrs. Ends 13 yrs. Katara- Starts 14 yrs. Ends 15 yrs. Sokka- Starts 15 yrs. Ends 16 yrs. Toph- Starts 12 yrs. Ends 12 and a half maybe 13 yrs.
Non living flyers - 15 letters -automatic, the last 6 letters _JLO-S.
Autumn starts on or around september-15 and ends on december-20 solar-term.
The school system in Mexico varies a little from that of the US:The primary education ("educacion primaria") starts at age 6 and ends at age 12.The secondary education ("educacion secundaria") starts at age 12 and ends at age 15.The high-school ("preparatoria") starts at age 15 and ends at age 18.The college or university ("universidad") starts at age 18 and can end at age 20 or 22 depending on the grade earned.
dissertation I know it's short of 15 letters- maybe someone else has a better answer.
it ends at 4:15 and starts at 8:55 sharp
Demisemiquaver(s)- the s makes it a 15 letter word. I hope this was the one you were looking for!
Could be whatchamacallit, 15 letters.