This is a common problem in many projects I have, (infrastructure construction) where permitted working times vary in different areas (eg road 1 working times are 0800-1800, while road 2 is off peak only due to access, and road 3 is 0900-1730 due to residents). Its not a choice, but imposed by the client.

OP- depending on exactly why the limits are imposed, there may be alternatives. Generally, I will use a standard day and standard night shift, and ignore the stated working times. Use days as your standard time, and this allows you to create a programme where you only use one calendar, but can keep track of work.

In your case, where there is only an hour or so difference between working days, I would suggest this is the best solution. If you need to keep track of the available time for each task, create a column (or columns) for start/ finish times, if only as a record of the permitted times.