WARNING: For a lab cache to count in unique types per day it needs to be logged on the correct date. However lab caches are not logged on the local date, they are logged on Seattle time, which is UTC -8. But Project-GC uses the correct date, so I strongly recommend you take care. For example, I am in New Zealand, so for me to log a lab cache on the correct date on both Geocaching.com and on Project-gc I have to log it after 9pm.
Project-gc uses the correct date, so in theory you could log it any time on that day, but should Geocaching correct their logging dates, there is a possibility that they will keep the same date they currently use which may be the day before where you are, depending where on the planet you live. And to maintain alignment with Geocaching data, Project-gc may change to match, in which case the lab cache find may change dates, messing up your unique find stats.
Where they are critical to calendar based objectives, make sure you log the cache when the local date matches Seattle date.