Table A.3: Times of primary (P) minima of HW CMa. O-C values are calculated for the ephemeris given in Eq. (2).

HJD	rms	Type	O-C	Reference
- 2 400 000
48 689.6471	0.0004	P	0.0000	This paper
52 279.6787	0.0004	P	0.0000	-