The free September calendar and worksheet have just been uploaded to TES. See here as usual.
It’s really worthwhile having a go at these activities with your new year group. Whichever age you teach, you will probably find a wide variety of knowledge (and also firmly established erroneous ideas) about how we refer to parts of the week/month/season/year. It is so important that children achieve an age-appropriate level of familiarity with the calendar’s organisation and, along the way, we need many concepts of time, sequencing, counting on etc. and the language to talk about them.