be as regular as clockwork

To happen at predictable intervals. My daughter starts crying every night at bedtime—it's as regular as clockwork.

if something is as regular as clockwork, it happens at exactly regular times Her letters arrived every week, regular as clockwork.

Name	Pronounced	Usage
Agostino	-	Italian
Tatiana	tah-TYAH-nah (Russian, Polish, Spanish, Italian), TAH-tee-ah-nah (Finnish), ta-tee-AN-ə (English), ta-TYAN-ə (English)	Russian, Slovak, Bulgarian, Romanian, Polish, Greek, Georgian, Spanish, Portuguese, Italian, Finnish
Hiraku	hee-ṙah-koo	Japanese
Sigismund	-	German, Ancient Germanic
Fyodor	FYO-dahr	Russian
Bakewell	['beikwəl]