Can I go to the temple on the fourth day of the fourth lunar month?

You can go to the temple on the fourth day, but you didn't say you can't go to the temple on the fourth day. If you are worried, you can check the Gregorian calendar first to see if there are any taboos.

Generally speaking, some days are not suitable for burning incense. In the first month, there are days when there is no fragrance, days when there is no fragrance in February, days when there is morning in March, cloudy days in April, noon in May, children in June, unitary in July, Shen in August, Si in September, sea in October, hair in November and ugly days in December. This is a dark day. Besides burning incense and praying during the day. Of course, if you really wish and do good, there are not too many taboos.